The PSR series of keyboards has a multi-finger mode that allows the user to play using single finger, or multi-fingered chords. For those with guitar backgrounds, it provides an easier mode of fingering and a smoother transition from the guitar to keyboard.
Cheers,
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)