The opening concert of Mistral Music, formerly known as Andover Chamber Music, is scheduled for the Rogers Center for the Arts at 7:30 p.m. Sept. 21. The 17th season kicks off with “Wanderlust: Postcards from Around the World,” a musical adventure from the dance halls and bars of Buenos Aires. The concert features modern tangos with Pablo Ziegler, a Latin Grammy-winning pianist and the preeminent living member of Astor Piazzolla’s groundbreaking tango ensemble. Ziegler leads a 10-person all-star band in rhythmic new compositions as well as classics by tango legends. For more information or to order tickets online, visit www.andoverchambermusic.org.