Martyn Ware is noted for using the Roland MC-4 MicroComposer, as highlighted in a tribute on KitMonsters to Roland’s founder.

"Since then, I’ve had most of the Roland keyboards and modules like the XP-80, Fantom, JV-1080, XV-5080 and even the M-GS64. Back in the ’80s, I was programming with the MC-4 for The Moody Blues and others."

Mentioned in a 1980s Artist Magazine interview with Melissa Bennett.

Now, Ronnie Montrose is "strictly solo," just a man and his instrument, not just a single instrument, but several; and he does all the work. He'll be using a Roland Micro-Composer MC4, a tool that is essential to any show he does, for running several synthesizers and working lights all from one pint.

"Ciani is no newcomer to synthesis, or to Roland instruments. “I have used Roland gear for about 25 years now,” she says, “going back to the MC-4 and the MC-8 used on my first recording, Seven Waves. In fact, I love ‘vintage’ synths. and used the Roland D-550 extensively on Silver Ship as well.”"

On the shelf on the left side, you can see an MC-4 on the second row from the top.

"I used to use the ARP analog sequencer, but that was limited to 16 notes and tended to produce songs heavily based on a single riff. Instead of just putting layers on top of that I'm using more harmonies and key changes instead, so the MC4's ideal."

"No matter how good it is, a keyboard will sound like a keyboard if you play it that way." That's why Steve Levine prefers to run the set-up from the Roland MC4, removing the more predictable element of human, habit-formed fingers over the black and white plastic. Organising the MC4 instructions makes you think again, and consider how a violinist might set about the job.

"The New Edition stuff was all computer and I mainly used the Roland MC4, actually doing all the programming in the studio."

Andy Richards is confirmed to use the Roland MC-4 MicroComposer, as mentioned in "A Beginner’s Guide To ANDY RICHARDS" by electricityclub on Electricityclub.co.uk.