Synthesizer manufacturer Ensoniq had a connection with Commodore through some engineers who originally worked on the Commodore 64. Robert Yannes, co-founder of Ensoniq, and Al Charpentier, both former Commodore engineers, were instrumental in designing the famous SID chip used in the Commodore 64. The expertise in digital sound technology gained from their time at Commodore was later applied to Ensoniq synthesizers, contributing to their innovative sound and features.