Amsco Publications in New York publish a terrific little book, The Fiddle Case Tune Book, that fits in the case as the title suggests and can be propped on almost anything when you need a discreet crib. It contains what it considers to be the 50 tunes from the basic old time repertoire that every fiddler should know. 50 is different fron 10, I hear you say. But what you find at any jam sessions is that the 10 tunes that everybody always plays change everytime you go there.