It was this week in 1967 that the Supremes debuted as Diana Ross & the Supremes with REFLECTIONS, with a psychedelic intro. [[I remember Diana describing the sound as mechanical in a blue box set where all the artists' intro'd their songs with a little story.) This article also says that HDH happened to overhear Russ Terrana using a tone generator to tune the studio. It inspired them to put its “bleeping” oscillator effect onto the intro of the already brooding and experimental ‘Reflections.’

Flo was on the record, but no longer in the group when it was released. The song would have gone to number one, but some guy jumped off the Tallahassee bridge and Reflections stalled at Number 2

https://www.udiscovermusic.com/stori...c-reflections/