Here you will find cellofun transcriptions of music that was originally written with the violin or viola as the protagonist:
Bach   Bartok   Beethoven   Brahms  Debussy Dushkin (Paradis) Fauré
Kreisler   Mozart  Paganini   Saint Saens Sarasate  Telemann  Stravinsky
And the following link opens an article about the transcription process: