After a monthlong hiatus, the Fireside Sessions with Nancy Atlas will return to Bay Street Theater in Sag Harbor tomorrow evening at 8. Ms. Atlas’s guests will include Billy Campion and Billy Ryan, formerly of the Bogmen, one of New York City’s biggest underground bands during the mid-1990s.

The Nancy Atlas Project has been a mainstay of the East End music scene for many years. The group has opened for Elvis Costello, Lucinda Williams, Toots and the Maytals, Jimmy Buffett, and Crosby, Stills, and Nash, among many others. Tickets to the show are $20.

Latin music will take over the theater on Saturday at 8 p.m. with 30-minute sets by Mambo Loco, Mr. No-Shame, Alfredo Merat and Europa, and “one of the most wild dance nights you will ever see,” according to Bay Street’s website.

Mambo Loco is known for its blend of Latin jazz and “old school” Latin music, which has its roots in the 1950s and 1960s. Mr. No-Shame is a six-piece, polyrhythmic Latino rock band whose eclectic sound reflects the diverse backgrounds of its members. Europa’s style ranges from world jazz to danceable Latin music. All three groups perform regularly on the East End and beyond. The cost is $20.

Center Stage at the Southampton Cultural Center will begin a three-week run of “A Chorus Line” tonight at 7:30. The Pulitzer Prize-winning musical, conceived and choreographed by Michael Bennett, opened on Broadway in 1975 and ran for more than 6,000 performances. Set at an audition, the show celebrates the ambitions and disappointments of background dancers who perform in the shadow of a production’s stars.

Michael Disher, Center Stage’s director, has recreated the original choreography. Tickets are $25, $12 for students under 21 with identification, and $23 for senior citizens on Fridays only. Performances will take place Thursdays at 7:30 p.m., Fridays and Saturdays at 8, and Sundays at 2:30 through March 22. Dinner-and-theater packages will also be available. More information can be found at scc-arts.org.

The cultural center has also announced the installation of elevated theater seating, which should provide better sight lines and allow for expanded programming.

As part of the Madoo Talks lecture series, Marilee Foster, an artist, writer, and farmer whose family settled in Sagaponack in the mid-1700s, will talk about “The Evolving Sagaponack Landscape” at the Madoo Conservancy in that village on Sunday at noon.

Ms. Foster, the author of “Dirt Under My Nails: An American Farmer and Her Changing Land,” will take a realistic yet humorous look at development, the difficulties of farming in the 21st century, and the success of her Sagg Main farm stand. The talk will be followed by refreshments from the Topping Rose House. Tickets are $30, $25 for members.

Artworks began appearing in public locations in and around the Village of Southampton in September. Spray-painted with a bright, glittery palette, some were abstract, some included letters and words, and some bore the stenciled face of a helmeted Valkyrie.

They showed up outside the Southampton Arts Center, the Golden Pear Cafe, and along Route 27, among other places. Embossed labels spelled out “@gemeinschaftprojekt,” but there was no artist’s signature. More often than not, the works disappeared soon after being placed in public. It had the look of a subtle conceptual public art project.

Anyone deciding to make off with one of the works, however, would find on its back a sheet of paper giving a partial explanation, beginning with “Please pay it forward to women with cancer.” Directions for payment by check are given, as is a link for paying online. The beneficiary is the Coalition for Women’s Cancers at Southampton Hospital. The label refers to the C.W.C. Tanster project.

The mission of the coalition is “to create and sustain a supportive network for women affected by breast, ovarian, and uterine cancers” by focusing on early detection.

But who or what is the Tanster? During a recent conversation at the Golden Pear in Southampton, the arrangements for which were straight out of an espionage novel, the Tanster revealed herself as a woman who prefers to remain anonymous.

She grew up and lives in Water Mill, attended the Sorbonne, graduated from Stony Brook University, earned a master’s degree in film production from the New York Institute of Technology, and worked for Getty Images.

She also does body work — before starting the current project, she fixed up and spray-painted old Vespas and Mercedeses. “I’m really into seeing how machines work,” she said. “I’m interested in Tesla, who was such a brilliant inventor but never received the recognition he deserved during his lifetime and died penniless.”

“ ‘Gemeinschaft’ means ‘community project’ in German,” she explained. “I asked myself, ‘Will I do better giving away or keeping my stuff?’ For me, nothing is proprietary. You want it, take it. Yesterday I put a piece outside the 7-Eleven, with their permission. I went inside to get my coffee, and when I came out it was gone.”

The artworks in public places are only part of the Tanster’s endeavor. Gemeinschaftprojekt, her Instagram feed, features not only artworks — she has produced more than 200 since September — but also photographs of cars, dogs, and whatever else strikes her fancy. On average, she posts three or four images per day and has more than 1,200 followers.

Will McLear, the owner of Ocean Graphics in East Hampton, came upon her Instagram feed and contacted her about sponsoring the project. The company has placed print advertisements on its behalf and will print the explanatory decals for the backs of the artworks.

The Tanster also shoots videos and posts them to her YouTube page. Many of these are short instructional videos such as “How to paint with screen-print stencil” or “How to spray a rainbow.” Others are animations, many in fast-motion, of the creation of her spray-painted works. One might also encounter a high-speed, 13-second motorcycle ride around Southampton.

“There’s a person in Northern Alberta copying my tutorials on how I make my art,” she said. “There’s a guy in Australia for whom it’s completely changed the course of his Instagram.”

The hospital is the only charity that benefits from the project. “It’s not just about sending money to the hospital,” she said. “It’s getting people into the frame of mind of giving. I really believe in what the hospital is doing. It’s a fantastic cause, and everybody from Hampton Bays to Montauk has a connection to it.”

Looking ahead, the Tanster hopes to enlist Volkswagen as a sponsor. “I’d like to paint a rainbow on a car and put the link to the charity on the side. People would photograph it, and their published photos would promote the charity. It’s the people’s car, and it has that hippie tradition of people painting their VWs.”

Guild Hall’s 30th Academy of the Arts Lifetime Achievement Awards dinner will take place Monday from 6 to 10 p.m. at Sotheby’s in New York City.

This year’s honorees are Jules Feiffer, whose literary-media arts award will be presented by Robert Caro, Matthew Broderick for performing arts and Ralph Gibson for visual arts, both of whom will be introduced by Laurie Anderson, and Linda and Harry Macklowe, who will receive an award for leadership and philanthropy from Michael Lynne.

Guild Hall has also announced that Eric Fischl has been named the new president of the Academy, which honors both summer and year-round East End residents who have demonstrated excellence in the visual, literary, and performing arts.

Tickets for cocktails and dinner are priced from $1,500. Young patron tickets, for ages 21 to 40, are $500 for cocktails and dinner, $100 for cocktails only. Proceeds from the evening will benefit Guild Hall.

Glenn Feit has had his share of anxious moments. “It’s enough to take a bar exam,” said the partner in the international law firm Proskauer Rose LLP. “It’s enough to speak before hundreds of people in court. I’m a pilot,” he added, “and I’ve done all kinds of tests and so on.”

But it was not until 2011 when, early in his ninth decade and about to perform at Crossroads Music in Amagansett, his nerves briefly got the better of him. As Cynthia Daniels, the music producer, prepared to record the proceedings for later broadcast on WPPB Peconic Public Broadcasting, “My hand literally began to shake,” he said. “I have never even come close to being as nervous as I was that night for the radio show.”

Happily, the night was a success, and today, five and a half years after taking up the guitar around the time of his 80th birthday, Mr. Feit is one of the most recognized and beloved among the numerous musicians that call the South Fork home. He has performed at most of the live-music venues from Montauk to Riverhead, from open mike nights in dark bars to the bright stages at Guild Hall and the Suffolk Theater.

At the Bridgehampton house he shares with his wife, Barberi, several acoustic guitars are situated amid microphones, music stands, cables, and amplifiers. “I bought a new guitar, three months ago, as a ‘travel guitar,’ ” he told a visitor last week as he cradled a Taylor GS Mini, a compact model featuring a mahogany top. “The sound . . . I love it. I use it all the time. When I go to play now, people want to borrow it.”

Running through songs old and new, popular and obscure, Mr. Feit’s fingerpicking dexterity belies his relative newness to the instrument. This second career, however, was preceded by a false start, some 40 years ago in New York, where he and Barberi keep an apartment.

“When I first met Barberi, I had mentioned that I always wanted to play the guitar,” he said. With her encouragement, he discovered the Guitar Study Center, founded by Eddie Simon and his brother, the musician Paul Simon. “One Monday, I showed up. I looked like I was the landlord collecting the rent, because I don’t think anybody else was over 16,” he recalled.

But his attendance and practice regimen were hampered by the demands of his work. “I learned very quickly — not the guitar, but that if you want to play the guitar, you’ve got to have time for practice,” he said. “It doesn’t work if you just go one lesson to another, and not do anything in between. I had bought a nice guitar. I probably learned three chords. We put it away.”

Until many years later, that is, when he discovered the Sunday afternoon jam sessions at Crossroads Music, then on North Main Street in East Hampton. He bought a new guitar, “and I came in and basically learned by going to the jam.” A year later, he found abundant instructional videos on the website YouTube. “You can probably learn anything and everything,” he said of the site. “I put myself to it.”

Never a vocalist, a pivotal moment in Mr. Feit’s new career came at the Blue Sky Lounge in Sag Harbor, where Paul Gene, a pianist, was running an open mike night. “I loved just playing with people,” Mr. Feit said. “I would drive out from the city on Wednesday night just to go to an open mike to play with others, not by myself. There was a song I like, Eric Clapton’s ‘Wonderful Tonight.’ I had really learned it. Paul knew I did, and said, ‘Why don’t you play it as an individual, and sing it,’ which I’d never done before. There was a small audience, and when I finished, two women came up, independently, and kissed me on each cheek. I have to tell you, my reaction was ‘Well, they’re being nice to the old guy.’ But I got up, and everybody said, ‘No, do more!’ ”

Shortly thereafter, Ms. Daniels invited him to perform for the “On the Air” event at Crossroads, now at Amagansett Square. Mr. Feit overcame his fear and, he said, “I’m really enjoying what I’m doing.”

Now a veteran of the live-music scene, Mr. Feit has set his sights on the recording studio and is consulting with Ms. Daniels, who owns and operates MonkMusic Studios in East Hampton, on song selection.

“Glenn is definitely beloved around a rather large music community,” Ms. Daniels wrote in an email. “His decision to ‘follow his dream’ after a hugely successful business career at the ripe age of 80 is unique, to say the least.” He works tirelessly at his playing, Ms. Daniels said, and has progressed with remarkable speed. “Recording Glenn will be great,” she wrote, “and he will be able to work in a collaborative way in the studio with many local musicians who have supported his work.”

One such musician is likely to be Klyph Black, one of the South Fork’s most accomplished players. “It’s been a joy and a pleasure being part of Glenn’s musical journey. He’s become quite the guitar player as well as singer and performer,” Mr. Black said. “He plays songs that touch his heart and in turn they touch ours with his rendition of them. Glenn and Barberi are a blessing in my life as well as to the musical community — we couldn’t have more loving and beautiful friends.”

“This community out here is absolutely exceptional,” Mr. Feit said of his fellow musicians. “I have relatives who are musicians, and I tell them about this. They say there’s nothing that compares. Where they are, everything is very competitive, there’s a lot of backbiting. The support here is unbelievable. That, I would say, is a great part of why we’re having such a good time.”

Mr. Feit will be among the featured performers at Fresh Hamptons, in Bridgehampton, on Monday night.

“Our Hospitality,” a 1923 film starring Buster Keaton, will be screened at the East Hampton Presbyterian Church on Saturday at 7 p.m., with live accompaniment by Bernie Anderson on the church’s organ. The program has been rescheduled from an earlier date.

Keaton, known for his physical comedy and his “great stone face,” plays a city slicker from New York who finds himself in the middle of a family feud in Kentucky in the 1840s. A satire of the Hatfield-McCoy feud, the film, at the time of its release, was called by Variety  “one of the best comedies ever produced for the screen.”

Mr. Anderson has an M.F.A. in musical theater writing from New York University’s Tisch School of the Arts and studied with the famed organists Lee Erwin and Ashley Miller. In 2001, he was the organist for the New Jersey edition of the Library of Congress’s American Movie Classics Film Preservation Tour, performing his own scores for Laurel and Hardy’s “Big Business,” “The Great Train Robbery,” and Harold Lloyd’s “Safety Last.”

A live pianist or organist accompanied most silent films, and the music was usually improvised. Mr. Anderson follows in that tradition, improvising on the spot in order to maintain a feeling of spontaneity. The church suggests a $15 donation, though children and young adults will be admitted free.

ZIMA! — a whimsical, theatrical treasure hunt performed by Kate Mueth and the Neo-Political Cowgirls in partnership with the Montauk Playhouse Community Center Foundation — will take place Saturday from 1 to 3 p.m. in Montauk.

Regardless of the weather, the hunt will begin at the gazebo on the green in downtown Montauk, with start times every 20 minutes beginning at 1 p.m. The interactive event will feature a series of magical vignettes of humans, sculpture, and displays, and a “weary traveling man” who will invite participants to enter his imaginative world while offering up a riddle to be solved.

Vignettes providing clues will be found in Montauk storefronts and outside local landmarks. At the end, participants will be invited back to the playhouse for treats and to learn whether they have solved the riddle.

The event is suitable for all ages, according to the community center foundation, which has requested a $5 donation per participant.

Softball Inspired

Kathryn Markel Fine Arts in Bridgehampton will be the site of “Spring Training 2015,” a pop-up art exhibition, from tomorrow through March 29. A reception will be held March 14 from 6 to 8 p.m.

The works in the exhibition, which will benefit this year’s Artists and Writers Softball Game charities, will include both representational and abstract art influenced by softball. Half of all proceeds will help support East End Hospice, the Eleanor Whitmore Early Childhood Center, Phoenix House Academy, and the Retreat.

In addition to the gallery show, the artwork will be available for viewing and purchase at paddle8.com during the run of the exhibition. Online bidding will start on March 14. The gallery will be open Fridays through Sundays from 11 a.m. to 6 p.m.

A show of work by Jane Freilicher will be presented this week by the Tibor de Nagy Gallery at the Art Dealers Association of America’s "Art Show" fair in New York City.

Ms. Freilicher, who died last year, was not only a “painterly realist‚” in the words of her gallery, but an inspiration for several poets of the era, including Frank O’Hara and John Ashbery, who were also her friends. She was known for the still lifes that she often placed near her windows, showing the view outside her Water Mill studio.

The exhibition is part of New York’s Armory Week, which runs through the weekend and includes numerous fairs throughout the city. The Armory Show will take place at the piers; the dealers association's fair is at the Park Avenue Armory.

The folks who have brought Art Market Hamptons to Bridgehampton the past few Julys are offering a new fair this year, Art on Paper. That show will take place in downtown Manhattan on Pier 36, on the East River. Two East Hampton galleries, Eric Firestone and Birnam Wood, will be represented at the fair. Firestone will show Bast, Henry Chalfant, Albert Chamillard, Tseng Kwong Chi, and James Ulmer. Birnam Wood will bring work by Beauford Delaney, Sam Francis, Margaret Garrett, Susan Grossman, William John Ken­nedy, Robert Rauschenberg, Michael Rich, Katherine Ryan Roth, and Aurelia Wasser. The fair will be open daily through Sunday.

Harper’s Books has also been in the city this week. Its Rare Book Room, a  pop-up gallery, is at the Carlyle Hotel; it will continue Thursday from noon until 8 p.m. before closing. Featured are “unique artists’ interventions by Harmony Korine, Justin Adian, and Jordan Wolfson, alongside a selection of rare books, ephemera, and Japanese magazines from the 1970s.” There will also be art on view by Sadie Laska, Brad Phillips, Richard Prince, and Matthew King. Those attending need to ask at the Carlyle’s front desk for the Harper’s Books suite.