Jimmy Hart & JJ Maguire were a prolific music production duo, primarily known for writing and producing the iconic entrance themes for numerous WWF (currently, WWE) and WCW superstars in the '80s and '90s, with Maguire serving as Hart's key collaborator on hits like Sexy Boy for Shawn Michaels and Hitman for Bret Hart. They were integral to creating memorable character sounds, making them unsung heroes of wrestling music. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.