Mozart, Violin Concerto In Bb Major (Peters)

Mozart's "Romantic Sonatas" for violin and piano have uncertain authorship. The original autographs are missing, and the publisher, Breitkopf & Härtel, doubted their authenticity. Konstanze, Mozart's wife, offered the sonatas to the publisher in 1799, but they were disappointed and requested the original manuscript. However, it could not be found, adding to Konstanze's doubts.

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.