COPLAND’S WORLD The Bard Music Festival focuses this year on Brooklyn native Aaron Copland. The three-day festival includes a Documentary Panorama (Friday, 10 a.m.-2:30 p.m.); a piano, violin, and chamber performance (Friday, 8 p.m.); Copland’s Piano Fantasy (Saturday, 5 p.m.); and a conversation with composers (Sunday, 10 a.m.), as well as other concerts, lectures, and symposia. All events: Richard B. Fisher Center for the Performing Arts, Bard College, Annandale-on-Hudson, 90 miles north of New York City, 845-758-7900, $25-$55. For a full schedule of events, go to www.bard.edu.

THREE OF A KIND Galapagos Art Space presents three musical acts: Groovehouse, a marimba, saxophone, guitar, bass, and drum band; Paul Hammer, a 20-year-old local singer-songwriter, and Mike Clifford, a first-grade public school teacher by day and folk-soul performer at night. Friday, 7 p.m., Galapagos, 70 N. 6th St., between Kent and Wythe avenues, Williamsburg, Brooklyn, 718-782-5188, $5.

HAT TRICK Singer-songwriter Juliana Hatfield performs at a small venue in Brooklyn. Rockers the Natural History open the show. Friday, 8 p.m. doors open, Warsaw, 261 Driggs Ave. at Eckford Street, Williamsburg, Brooklyn, 212-387-5252, $16.

PIPE MUSIC The Cathedral of St. Patrick hosts Indianapolis organist and choirmaster A. Lee Barlow as part of its Sunday Organ Series. Sunday, 4:30 p.m., St. Patrick’s Cathedral, 460 Madison Ave., between 50th and 51st streets, 212-753-2261 ext. 274, free.

To submit an event for consideration for the Calendar, please wire the particulars to calendar@nysun.com, placing the date of the event in the subject line.