Virtual Sheet Music® Premium High-Quality digital sheet music for violin and cello (duets), all the collections, 1-3. A great selection of Christmas music for violin and cello, my friend and I used them to go busking to raise money for our orchestra. These collections are easy to play and makes playing in front of a crowd easier for me. My cello partner and I have been playing these pieces for a few years now, and really enjoy the various pieces. Purchased as repertoire for two 13 year olds to go busking at Christmas. It was just the right level for them, not too difficult that they got demoralised and after only a couple of practices they sounded good. A great buy, we'll use it every year. I was pleased this worked also for flute and trombone. I do think it's a bit tougher on trombone than cello so I've changed the difficulty to E/M. Best use of this book (series) I bought out of 3 versions (flute/guitar and piano/voice). This is just what we were looking for. Thanks. I purchased the collection for tow violins and piano and found all the selections to be terrific and not terribly difficult. A great buy.