This minuet and trio is Boccherini's most famous piece of music. Luigi Boccherini was a cellist who wrote a lot of concertos and sonatas for the cello. As well as many String Quartets he also wrote a huge number of String Quintets which are like the traditional String Quartet but with an extra cello. This Minuet and Trio is in the key of A but comes from a String Quintet in E Op.11 No.5. In printable PDF format you can download the Full Score of this work, plus the parts for 1st Violin, 2nd Violin, Viola, 1st Cello and 2nd Cello. The midi and mp3 versions of this piece can be downloaded using the links in the left-hand menu. The video below illustrates the music with a graphical animation, or you can play the mp3 file and see the sheet music score before downloading.
Here is a video of Boccherini's Minuet:
The image below is the first page of the sheet music, and here you can download the full sheet music for Boccherini's Minuet in PDF format.