Concertmaster Sam Taylor and members of the Glacier String Quartet play one of Mozart’s last string quartets, No. 21 K. 575 in D Major, which was written for the king of Prussia, on Tuesday afternoon during open rehearsal at the O’Shaughnessy Cultural Arts Center in Whitefish. The quartet will perform with April Lane this evening at the O’Shaughnessy Center as part of the weeklong Festival Amadeus.

The chamber music concert, “Fanfare Flourishes, Mozart and Mahler,”  begins at 7:30 p.m. Also today, the community can attend a free open rehearsal with Roberto Plano and Nigel Armstrong at 12:30 p.m. at the O’Shaughnessy Center.