Foolestroupe, you may be thinking of Graham Caldersmith; then again, you may be thinking of someone else. He used to make all sorts of specials but I think these days he concentrates on violins. Graham's instruments are superb.

Scoville, airs are not just slower, their phrasing can be a lot freer than most uptempo tunes. If you haven't already had this suggested to you, you might explore music for recorder consorts, which also deal with instruments having similar relationships,

Because I gather you play them all now you are probably immune to the jest I heard today from a viola player who commented that, in an orchestra, viola players are stuck between violinists who play fast and sharp and cellists who play slow and flat; violas have to try and strike a happy medium and get belted from both directions. Have fun with yours.

Cheers, Rowan