Yamaha PSR-240

The Yamaha PSR-240 is a portable keyboard synthesizer released in the early 1990s. It was popular among amateur and professional musicians alike, and was used by artists such as the Red Hot Chili Peppers, Radiohead, and the Beastie Boys.

The PSR-240 is a 61-key keyboard with a built-in sound engine that can produce a variety of sounds, including piano, organ, strings, and drums. It also has a built-in sequencer for recording and playing back music. The keyboard also has a variety of effects. Additionally, the PSR-240 has a built-in metronome and a transpose function for changing the key of a song.