Philip Sparke's Skillful Duets is the second volume (following Starter Duets) of a progressive series of duet books that takes the young wind player from beginner to accomplished musician. It contains longer pieces suitable for the developing young musician, specifically tailored for each instrument. The books introduce the concept of phrasing by suggesting suitable breathing points, and they guide players into new keys with extended instrumental ranges. Concept such as tempo and style indications are also introduced.