Vamoosh Christmas Violin. Vamoosh Christmas for young Violinists. 12 well known Christmas items arranged for Violin duo with optional accompanying backing-track or piano. Books are compatible with Vamoosh Christmas for Viola, Cello, Double Bass, Flute and Recorder so you can join friends for a Christmas feast of music making. Backing-tracks are available on many online platforms such as Spotify, iTunes, GooglePlay and YouTube. Search for Vamoosh Christmas Backing-tracks.