The Mellotron keyboard from the 1960s was known for generating its sound from pre-recorded tapes where each key triggers a specific sound https://t.co/XzzMU8qFQo https://video.twimg.com/ext_tw_video/1783936810114048000/pu/vid/avc1/862x720/OrRZ4aP1pq7tNc-3.mp4?tag=12