Yamaha PSRS550B 61 Key Arranger Workstation Keyboard Sound Quality - large selection of realistic Voices - vast selection of 294 realistic instrument voices, 480 GM/XG Voices and 22 drum/SFX kits. Included is a selection of Regional Voices and Drum Kits (Chinese, Indian and Middle Eastern) and special piano, guitar, brass and flute LCD displays lyrics, chords, notation - Have you ever played a song and wondered what it would look like as sheet music? The PSR-S550B can display the score to a song whether it comes from the Internet, the internal selections or ones that you record yourself, and the pages scroll automatically when a song is played back Ease of Operation - Mixer Function, Music Database, One Touch Settings, Registration buttons - There are many tools in the keyboard that make it easy to be a power user from the first day 16-track sequencer and 64-note polyphony - Sixteen tracks are provided to accommodate sophisticated melodies, chord accompaniment and rhythm parts. And to keep you from running out of notes with all that great music playing, the PSR-S550B features 64-note polyphony Three effects blocks - tailor your sound - 35 Reverb, 44 Chorus and 237 DSP effects plus 26 Harmony and 5 preset types of Master EQ. The 237 DSP effects can be added to the Main, Dual and Left Voices