J.S. Bach's Prelude from Cello Suite 1 (BWV 1007 in D) for Classical Guitar - Music, Tab and Sheet Music
Johann Sebastian Bach (1685-1750) was one of the greatest composers of all time. His death in 1750 is generally considered to be the end of the Baroque era in music history. You can read a biography of Bach on Wikipedia here. One of his most famous works for the guitar is the Prelude in D Major from Cello Suite 1. Wikipedia has a great article Bach's Six Suites for Unaccompanied Cello. Here is how the Prelude sounds on Guitar.
While playing the first few measures of the piece is fun and fairly easy, the Prelude as a whole is quite difficult! The Royal Conservatory of Music lists it as Grade 7, which means that a student would be expected to have several years of lessons under their belt before attempting to play and perform the whole piece. For reference, here is a video of the world famous cellist Yo-Yo Ma playing the piece on Cello. It's fun to contrast the piece on two instruments! If you are attempting to learn this piece, then I recommend using the following references for sheet music and tab. Additionally, you might want to pick up a professional recording of the piece played on both the cello and guitar.