Belcke explains that the duos are all in the same key of B-flat and may be transposed into any key or clef, which adds a serious challenge for the performers beyond the initial intermediate level of the music. Check out the sample and test yourself....can you transpose up or down a half or full step at sight?
Niels-Ole Bo Johansen has edited these six duos so both parts can be shared with one score. - the publisher