String Quintet No. 4 (Mozart)

The String Quintet No. 4 in G minor, K. 516, written by Wolfgang Amadeus Mozart, is like all of Mozart's string quintets a "viola quintet" in that it is scored for string quartet and an extra viola (i.e., two violins, two violas, and cello). The mood of the piece is dark and melancholic, typical of Mozart's G minor works.

The work was completed on May 16, 1787, less than a month after the completion of his grand C major Quintet, K. 515. This would not be the last time that a great pair of C major/G minor works of the same form would be published in close proximity and assigned consecutive Köchel numbers. The following year, the 40th (G minor) and 41st (C major) symphonies (respectively K. 550 and K. 551) would be completed within a few weeks of each other.

The autograph manuscript of the quintet is preserved in the Jagiellonian Library (Kraków).^{[citation needed]}