Mozart's Sinfonia Concertante for Violin, Viola, and Orchestra in E-flat major, K. 364 (320d), was composed in 1779 during his tour of Europe. This piece is a cross-over of symphony and concerto and showcases Mozart's exceptional musical talent. The piece's three movements are filled with intricate melodies, harmonies, and rhythms that demonstrate the complexity and depth of the composition. Its average performance time is half an hour.

Mozart Concerto No4 in D Major K218 for violin by Joachim  (IMC)

The String Quintet No. 1 in B flat major, K. 174, was written by Wolfgang Amadeus Mozart in December 1773. Unlike Mozart's other viola quintets which are scored for two violins, two violas and cello- this early work is scored for two violins, two violas and basso.