Six Waltzing Duets is a new book just published by qPress Music Publishing. I composed these duets with the intermediate/advanced player in mind. Duets are great for learning to play together, you are forced to play in time and listening carefully and react to the other player. It will help to develop the skills for playing in a bigger ensemble like a combo, big band or an orchestra.
On the qPress page you will find more info and some samples of the sheet music and some demos I recorded.
Here a demo from Waltz No. 3: