Par MC GREGOR JOANNA. PianoWorld: Exploring The Piano Repertoire Book is a fun collection, perfect for all pre-Grade 1 pianists! This book supports PianoWorld Book 2: Exploring the Piano but is ideal alongside the second part of any piano tutor. Beautifully and imaginatively written by Joanna MacGregor, these progressive pieces develop new skills gradually, reinforcing many essential techniques for young pianists such as new hand positions, slurred couplets and using the black keys./ Recueil / Piano