Concerto No. 1 in G Major, K313 (with flute 2 part) (Flute and Piano)Concerto No. 1 in G Major, K313, (Flute and Piano + Flute 2 part) By W. A Mozart, With Flute 2 part By Carol Wincenc, Published By Lauren Keiser. The concerti by Wolfgang Amadeus Mozart K 313 in G Major and K 314 in D Major represent two of the most important pieces for the flute. These Carol Wincenc publcations help students in their learning and preparation of these great works by utilizing a second flute part, an effective practice introduced by