Around the same time Jermaine recorded a solo album with Philadelphia International producers & session musicians. Berry Gordy and/or Motown cancelled Jermaine's album, probably because it had a lot of the same people who would wind up working on The Jacksons' debut album on Epic/PI. Jermaine's album was supposed to be called Do Unto Others, it even had a track listing. One song from the sessions came out on a various artists compilation (not on Motown) in the early 2000s, but the rest is still unreleased. A few tracks have leaked, they're posted on Youtube.
Love it.
Not that I know of, unless it's the single version. I have Boogie. A few of the early J5 singles were released in mono mixes instead of stereo. Other than it being in mono, I think it was identical to the album version. Sometimes a mono was different than a stereo, like Helter Skelter by The Beatles. There were also what was called "fake stereo" when the record labels first started doing stereo. These are easy to spot, usually the vocals are on one speaker and the instruments on the other. It's unlikely they would have put a mono version on an otherwise stereo album, or a mono mix at all in 1979. In the early 2000s Motown released a series of box sets of the A & B sides of every single from the beginning in 1959 up to around 1973 or 1974. This isn't just Jackson 5 though. These sets do have the mono versions if the 45 was released that way.
