The volumes of the Ad libitum series contain duos, trios and quartets of easy, medium and advanced levels of difficulty, which are playable with various combinations of instruments.

Ad libitum Family Edition volumes are recommended mainly for families or groups of friends where at least three people play an instrument. Each of the pieces included can be performed using flexible instrumentation, whether there are three, four or even five persons who would like to play together. This volume contains the finest of easily playable pieces for Christmas and Advent. Some can include a singer, so that a vocal part appears with the instrumental ones.