Butler is noted as being one of the first bassists to use a wah-wah pedal on his bass. While Ozzy Osbourne was the frontman of the band, Butler wrote almost all of the band's lyrics, drawing heavily upon his fascination with religion, science-fiction, fantasy and horror, and musings on the darker side of human nature that posed a constant threat of global annihilation. See more at www.geezerbutler.com. 

A portion of profits from the sale of Geezer Butler's strings go to Nordoff & Robbins: Nordoff and Robbins is the UK's leading private provider of music therapy services. Our trained network of music therapists work with people of all ages and with a range of conditions. We deliver thousands of music therapy sessions per year in care homes, day centers, hospitals, schools and our own centers. We are also developing a range of other music and health projects aimed at bringing music to more and more people in local communities. See more at www.nordoff-robbins.org.uk.