Music rest for the CP series. The Yamaha YMR-04 Music Rest for CP73 and CP88 is a robust and compact music rest designed for use with the Yamaha CP73 and CP88 Digital Stage Pianos. This add-on attachment allows you to accommodate sheet music for practising general playing and live performances. The robust design is highly durable and able to withstand the rigors of extensive live use. The YMR-04 Music Rest clips-on to the CP series digital pianos with ease and provides a stable platform.