Premium Feel and Sound The Alesis Concert is a full-featured digital piano with 88 full-sized semi-weighted keys with adjustable touch response. The Concert features 10 realistic built-in voices: Acoustic Piano, Bright Piano, Electric Piano, Harpsichord, Drawbar Organ, Church Organ, Synth, Strings, Bass and Clavi. Customize the voices by combining any two at once in Layer Mode for a full, rich tone. They can also be assigned to only the left or right hands in Split Mode. You can even add adjustable Reverb and Chorus to further tailor your sound. With powerful 20-watt built-in speakers and a 128-note maximum note polyphony, Concert delivers ultra-realistic sound with great playing experience.