Witches Brew for Cello - 16 Spooky Pieces to Play and Sing. Includes backing CD. Hoojum, Boojum, higgery wiggery, Wizards United! and Trick, Treat or Tango – just some of the spellbinding pieces from the magical new books Witches' Brew and Wizard's Potion. The innovative blend of rhythmical tunes, descriptive rhymes and exciting jazzy accompaniments are set to capture the imagination of all beginners.