Beethoven's Moonlight Sonata is his Piano Sonata No.14 in C-sharp minor, and its first movement is one of his most famous works. This arrangement by Jim Paterson is for B-flat clarinet and piano, and transposes the music to D minor (written as E minor for a B-flat clarinet). Download the sheet musc score (piano part) and clarinet part, or the midi and mp3 files using the links in the left-hand menu. Below there's a video showing the music in a "piano roll" animation, and below that you can play the mp3 file and see the sheet music score before downloading. On mfiles we also have Beethoven's original version of the moonlight sonata for piano solo and also the guitar arrangement by Tárrega.
Here is a video of Beethoven's Moonlight Sonata (1st movement) for clarinet and piano:
The audio controls below allow you to play the music or download Beethoven's Moonlight Sonata (1st movement) for clarinet and piano as an MP3 file.
The image below is the first page of the sheet music, and here you can download the full sheet music for Beethoven's Moonlight Sonata (1st movement) for clarinet and piano in PDF format.