A drama having its world premiere at LTV Studios is a memory play with a stellar cast that’s written like a jigsaw puzzle through time.

Life sciences, ranging from oceanography to psychiatry, inform two programs at The Church in Sag Harbor this weekend.

Hungarian concert from the choral society, comedy at Bay Street, Special Players’ romp in Mattituck, the sounds of the garden, spring pruning workshop.

Jazz and jamming at the Masonic Temple, Klyph Black and friends at the Talkhouse, Def Leppard and Billy Joel tribute bands in Riverhead.