Yamaha PSR-4500

The Yamaha PSR-4500 is a digital keyboard synthesizer released in the late 1980s. It was used by many professional musicians, including Herbie Hancock, Chick Corea, and George Duke. The PSR-4500 features a 61-key keyboard, a built-in sequencer, and a variety of sounds and effects. It also has a built-in arpeggiator, a pitch bend wheel, and a modulation wheel. The PSR-4500 also has a built-in drum machine and a variety of preset rhythms. It also has a built-in MIDI interface, allowing it to be connected to other MIDI devices.