I still play Nichelle Nichols's Down to Earth music album twice a year or so at work. If memory serves, it was released during TOS's first season. You might consider it ''Uhura'''s first solo act. But I never got around to her 1990s CD. (Out of This World?)
Then there's Mr. Spock's Music from Outer Space, a mixed bag to be sure, but a bit longer than Transformed Man.
At least she could sing and sing well, unlike the other two, and had a contract with Epic.