ORION IN BROOKLYN Philip Glass’s “Orion,” commissioned for the 2004 Summer Olympic Games, is performed in Brooklyn. Mr. Glass mans the keyboard, joined by collaborators including Australia’s Mark Atkins on the didgeridoo, China’s Wu Man on the four-stringed pipa, Foday Musa Suso on Africa’s harplike kora,Greek singer Eleftheria Arvanitaki, and India’s Kartik Seshadri playing a sitar composition that Mr. Glass composed with Ravi Shankar. Tonight-Saturday, 7:30 p.m., BAM Howard Gilman Opera House, 30 Lafayette Ave., between Ashland Place and St. Felix Street, 718-636-4100, $20, $40, and $60.

VERDI AND BERNSTEIN The Manhattan School of Music presents the school’s Philharmonia concert, conducted by David Gilbert.The program begins with Verdi’s “I vespri sicillani” overture and ends with “Symphonic Dances” from Bernstein’s “West Side Story.” Tomorrow, 8 p.m., Manhattan School of Music, John C. Borden Auditorium, 601 W. 122 St., between Broadway and Claremont Avenue, 917-493-4428, free.

BAD-BOY TUNES A recital focuses on the work of self-proclaimed “bad boy of music” George Antheil (1900-59). The New Jersey native caused a sensation in Europe and America with his avant-garde compositions and performances; his “Ballet Mecanique” caused a riot at its Carnegie Hall premiere. Later, he moved to Hollywood, where he wrote film scores for Cecil B. DeMille, invented a torpedo-control gadget with Hedy Lamarr, and wrote a “lonely hearts” newspaper column. At tomorrow’s concert, pianist Guy Livingston joins the Philadelphia Virtuosi Chamber Orchestra in performing Antheil’s “Piani Concerto No. 2,” “Seranade No. 2,” and the modern-day premiere of “Dreams Ballet.” Daniel Spalding conducts. Tomorrow, 8 p.m., Columbia University, Miller Theatre, 2960 Broadway at 116th Street, 212-854-7799, $20.

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.