I realize I've never posted an image of TADAO KIKUMOTO. Here he is. The man behind the legendary Roland TB-303 & TR-606.
Posted today @Roland_US:
"#TBT with the developer of the Roland TB-303: Tadao Kikumoto. Discover more about the history of the #TB303 and its impact on music culture: roland.com.."

An engineer called Tadao Kikumoto was hard at work on a new product that would accompany Roland’s TR- 606 drum machine. Mr. Kikumoto’s plan was to develop a machine to recreate the sound of an electric bass guitar, for solo performers to practice with and even take out to gigs. The two machines would link up and play at the same tempo via DIN Sync technology, providing a programmable and highly portable ‘backing band’."
Early ad featuring Ocsar Peterson with the HR-70, TB-303 & TR-606, originally posted here, and in black & white with text here.