Any one piece can be played by a huge variety of instrumental combinations ranging from an unaccompanied solo instrument to a symphonic rendition, which is why the cellofun editions offered on this site are classified according to the instrumental combination of the cellofun arrangement, rather than the scoring of the musical source.
Music For One Unaccompanied Cello Music For One Cello + Accompaniment Music For Two Or More Cellos
Duos for Cello and Violin Duos for Cello and Viola Duos for Cello and Bass