Check the listing for details. Yamaha CK61 61-Key Portable Stage Keyboard. Condition: New. Listed at 999.99 USD. The Yamaha CK61 turns everywhere you go into a stage or studio with intuitive controls, built-in speakers and all the sounds you need. This keyboard combines the sounds of the Yamaha CP stage piano with the organ and synth-focused YC stage keyboard for a totally new sonic palette. Two split points increase flexibility to play three different sounds across the keyboard. A focused piano and keyboard sound set that's expressive and authentic for any musical need features a variety of organ types for classic rock, pop, jazz, R&B and country. Imitative sounds with realistic string sections, brass ensembles and more add to its musical versatility. The Yamaha CK61 also includes a collection of fat, deep and expressive synth sounds that can be controlled in real time.