During what is now known innocuously as the holiday season, many people set aside time for at least one live music performance. Those looking for Advent music found a perfect opportunity on Sunday to hear two musical settings of the Canticle of Mary, otherwise known as the Magnificat. The Choral Society of the Hamptons once more joined forces with the South Fork Chamber Orchestra and a quartet of fine soloists to present an uplifting concert featuring interpretations from Johann Sebastian Bach (1685-1750) and Felix Mendelssohn (1809-47).