MO (pronounced 'mo') is an entry level music workstation by Yamaha. It is essentially a Motif ES without sampling capability and less advanced connections. A music workstation is piece of electronic musical equipment providing the facilities of: a sound module, a music sequencer and (usually) a musical keyboard. ... Yamaha may refer to: Yamaha Corporation – A manufacturer of a diverse range of musical instruments and electronics. ... The Motif ES is a workstation synthesizer by Yamaha Corporation and the successor of the Motif. ... An AKAI MPC2000 sampler // [edit] Overview The emergence of the digital sampler made sampling far more practical, and as samplers added progressively more digital processing to their recorded sounds, they began to merge into the mainstream of modern digital synthesizers. ...

There are two versions of the MO, the MO6 and MO8. The only differences between the two are the bigger size of the MO8 and its full-size 88-key hammer action keyboard compared to the regular 61-key keyboard of the MO6. The layout of a typical musical keyboard A musical keyboard is the set of adjacent depressible levers on a musical instrument which cause the instrument to produce sounds. ...

There is also the new MM6 'Mini Mo' 61-note keyboard.