Mozart " Eine kleine Nachtmusik"

Serenade No. 13 for strings in G major, K 525, more commonly known as Eine kleine Nachtmusik ("a small serenade" - rendered more literally but less accurately as "a little night music"), is one of the most popular compositions by Wolfgang Amadeus Mozart. Mozart wrote it in 1787 in Vienna while working on Don Giovanni. It is not known why or for whom he wrote this piece.

The work was written for a chamber ensemble of two violins, viola, and cello with optional double bass. It is often performed today with more than one person to a part.

Source: Wikipedia