I usually listen to Classic Rock from the 70s - 80s. I'm a big fan of Rush, the Stones & Bon Jovi....but sometimes it depends on my mood that day. I could put on some Jack Johnson, James Taylor or The Eagles 🙂
For me it comes from my imagination. I see something and either I make it exactly like that or create my own design. It may also be from a personal request...usually from my GF or friends and family!