Here's a commission I finished not too long ago for a music production studio. They wanted an original pin-up that involved a vintage keyboard synthesizer; beyond that I was given free reign. Luckily I enjoy drawing pin-ups and love the design of vintage electronics (a weird interest, I know, but us designers can find visual interest just about anywhere.)
I'm really happy with the finished result. I did some research on keyboard synthesizers and tried to stay authentic while still playing around with it here and there to give it a fun design.