Features. Standard AWM Tone Generation Yamaha's AWM (Advanced Wave Memory) tone generation has long been the leader in the industry. AWM Tone Generation provides realistic sounds with a wide range of expressiveness. AE (Action Effect) Keyboard - Supple, Responsive The AE Keyboard puts you in full control of superbly expressive sounds. This keyboard is the crystallization of a century's experience in crafting grand pianos, delivering the same firm yet supple response as a Yamaha grand. Wide Range of Voices--5 AWM Sounds plus 5 Variations The CLP311 offers a wide selection of voices including pianos, electric pianos, harpsichord, organ and more, for complete versatility across a broad range of music. This wide selection allows you to play your music using the sound of the instrument it was written for. Extended Polyphony When you play fast, dense legato passages, conventional digital pianos quickly run out of notes. This results in notes being truncated, as the instrument has to "steal" from sustained notes whenever you play a new note. With the CLP311 you're offered maximum 28-note polyphony to handle fast passages with a lot of sustained notes to assure you always have plenty of notes in reserve. Dual Mode Use the dual mode to combine two voices for simultaneous play, and create new and exciting voice combinations. Performance Memory Think of the performance memory as a built-in tape recorder, allowing you to record a backing track and then solo over the top of it. The CLP311 offers single track recording. You can archive your performance on your PC on an external MIDI recorder. Students will benefit by hearing and analyzing their performances. And to keep your time right, there's a built-in metronome with volume control. Cabinet The handsome wooden cabinet with dark rosewood grain finish will fit into any decor. Matching bench included.