Conversation so far:
what was the studio recording in reference to one-man bands?
The term one-man band is also colloquially used to describe a performer who plays every instrument on a recorded song one at a time, and then mixes them together
what do rock performers do in a one-man band performance?
some rock performers have made records in which they play every instrument (one after the other).
do rock performers overlay the sounds when they do one-man band recordings?
Some artists record and mixed their music in a multitrack studio and synchronize it with video multitrack video playing on all instruments, creating a one-man band illusion.
what other genres are mentioned in the article on one-man bands?
This approach to recording is more common in electronica genres such as techno and acid house
anybody else who uses the one-man band technique?
Rock performers such as Joe Hill Louis, Stevie Wonder, Prince, Lenny Kravitz have made records in which they play every instrument
anything else interesting about one-man bands?
Other examples of a one-man band in the recording studio are Dave Grohl for the first studio album by the Foo Fighters.

Question: where else is this becoming popular
Self-contained rewrite: where else is the one-man band technique becoming popular