Ensemble Book Complete Levels 2 and 3 of Alfred's Basic Piano Library contains ten 4-part ensembles carefully co-ordinated p age by page with the material in Lesson Book Complete Levels 2 and 3 Part 1 of each ensemble is a selected favorite from Fun Book Complete Levels 2 and 3 or Recital Book Complete Levels 2 and 3 in it's original version. Alfred's Basic piano Libra ry offers five series which are designed to prepare students for a successful musical learning experience.