Who recorded the Sega theme?

I can’t find any description of the circumstances surrounding the recording of the two-note “se-ga” clip which begins so many Genesis games. Does anyone know the story behind it?

All I know was that this was not the regular Sega logo. It was usually silent. The singing appeared only on Sonic the Hedgehog games.

I too, only recall hearing it on Sonic the Hedgehog.

Very distinctive clip though.