Extreme Music is a production music company. The production arm of Sony/ATV Music Publishing, the company creates and licenses music for use in television, film, advertising, and online media. Their library consists of over 15,000 original copyrights, covering music in a wide variety of genres. It includes music from artists and composers such as Quincy Jones, Hans Zimmer, George Martin, Snoop Dogg, Xzibit, and Junkie XL. Extreme Music is headquartered in London, with its creative operations based in a 7,500 square-foot production compound in Santa Monica, California. Extreme Music tracks have been licensed by editors, music producers and music supervisors at production companies, networks and advertising agencies, including A+E, Fox, BBC, HBO, the NFL and Apple. Among other productions, music from the Extreme library has been used in Mad Men, Ray Donovan, Dancing with the Stars, Birdman, Creed and It’s Always Sunny in Philadelphia. In August 2013, Extreme partnered with composer Hans Zimmer and his business partner, Steve Kofsky, to found Bleeding Fingers Music. A joint venture, it creates show-specific libraries and scores for unscripted, reality, documentary and light drama television shows. In 2017, it was ranked as the leading custom music scoring company in the industry.