Roland RD-500

The Roland RD-500 is a digital stage piano released in 1988. It was designed to provide a realistic piano sound and feel in a lightweight, portable package. It has been used by many professional musicians, including Elton John, Billy Joel, and Stevie Wonder.

The RD-500 features a weighted keyboard with 88 keys, a built-in sound library of over 500 sounds, and a variety of effects and controls. It also has a built-in sequencer and a MIDI interface for connecting to other instruments and computers. The RD-500 also has a built-in rhythm machine and a variety of performance features, such as split and layer functions, transpose, and a pitch bend wheel.