Join us for two performances celebrating the 250 th birthday of music’s most notorious prodigy, Wolfgang Amadeus Mozart.   These concerts, recorded live during the Gardner Museum’s Mozart Marathon in January 2006, feature some of our favorite soloists as well as the Gardner Chamber Orchestra, the museum’s resident ensemble. Violinist Corey Cerovsek, pianist Jeremy Denk, violist Kim Kashkashian and the Gardner Chamber Orchestra, with conductor Douglas Boyd, play Mozart’s Violin Sonata No. 21, K. 305 and Mozart’s Sinfonia Concertante for violin and viola, K. 364 Recorded live in the Tapestry Room of the Isabella Stewart Gardner Museum, Boston. Less