After leaving school, Duffy left Manchester when the Studio Sweethearts moved to London, working as a shop assistant at Johnsons in the King's Road, in Chelsea. The Studio Sweethearts subsequently broke up and Duffy began playing lead guitar part-time with the band entitled Theatre of Hate. Shortly after he met Ian Astbury, then frontman/lead vocalist with the Southern Death Cult, who was sufficiently impressed with Duffy's talents that he quit the Southern Death Cult to start a new band with him called Death Cult. After releasing two singles, the band shortened its name to The Cult. In The Cult's debut single "Spiritwalker", Duffy created a distinctive flanged sound using an then-unfashionable guitar: a mid-1970s Gretsch White Falcon, which later became Duffy's main instrument. The Cult's debut album, Dreamtime, was released in 1984, followed by their sophomore album, Love, in 1985, featuring the hit "She Sells Sanctuary".
Late 1980s and 1990s
For The Cult's third album, 1987's Electric, Duffy helped change the sound into metal-blues. In 1988, Duffy moved to Los Angeles with Astbury, where they both still reside. There, the two writing partners (with longtime bassist Jamie Stewart) turned to stadium rock and recorded Sonic Temple. The Cult reached a larger, mainstream audience, but the public's attention could not be sustained with their next album, Ceremony, at the dawn of the grunge age.
Following the 'Ceremonial Stomp' tour of 1992, Astbury pressured Duffy to return to their roots, with The Cult's self-titled album. This would ultimately lead to Astbury's departure from Duffy and The Cult in 1995.
During The Cult's four-year hiatus, Duffy played with Mike Peters of The Alarm in a project called Coloursound. Duffy also played on the title track from Japanese musician J's 1997 debut album, Pyromania.
The Cult reformation and hiatus
Duffy reformed The Cult with Astbury in 1999, which led to a new recording contract with Atlantic Records. This was capped off by a show at Atlanta's Music Midtown Festival in May 2001, where over 60,000 people watched them perform, leading up to the release of Beyond Good and Evil.
Their single to promote it, "Rise", which reached No. 125 in the US and No. 3 for 6 weeks on the mainstream rock chart, was removed from radio rotation a week after the album's release. Disappointing sales, reviews, and tour attendance ensued. In 2002, Astbury sent The Cult onto a hiatus once more, when he accepted an offer to sing with The Doors.
2004 and onward
In early 2004, Duffy formed the covers band Cardboard Vampyres alongside Alice in Chains guitarist/vocalist Jerry Cantrell. Also in the band were Mötley Crüe and Ratt vocalist John Corabi, The Cult bassist Chris Wyse and drummer Josh Howser.[4] The band played at various venues in the United States between 2004 and 2005. They predominantly played along the West Coast.[5] No albums were released by the band.
The Cult reformed in early 2006 and after playing several US concerts toured Europe. Duffy appeared in Ethan Dettenmaier's film, Sin-Jin Smyth, which was filmed in 2006, but remains unreleased.
In early 2006 Duffy recorded a debut album with his new band, Circus Diablo. The album was recorded with Duffy playing lead guitar and former Cult touring bass player Billy Morrison handling lead vocals and bass guitar duties. Former The Almightyfrontman, Ricky Warwick, played rhythm guitar on the CD. The former Cult, current Velvet Revolver, drummer Matt Sorum also played on the record.
After the completion of the album, former Fuel member Brett Scallions was added as bassist so Morrison could focus on being the lead singer. Then Jeremy Colson, formerly with Steve Vai, was brought in to be the full-time drummer for the band. Duffy's involvement ended in 2007.
In 2007, he was a judge on Bodog Music's Battle of the Bands.
In 2010, Duffy appeared on the TV-series, Married to Rock, which starred his girlfriend AJ Celi. In October 2012, he performed with Sammy Hagar and Michael Anthony at the Cabo Wabo Cantina for Sammy Hagar's Birthday Bash in Cabo San Lucas, Mexico.
In an October 2016 interview with PopMatters journalist J.C. Maçek III, Duffy spoke about his favorite Cult song, saying "Jonesy [former Sex Pistols guitarist turned radio host Steve Jones] on Jonesy's Jukebox just played 'Love' from the Love album and that's my favorite Cult song," he tells me proudly. "I actually got, I have to admit, a teeny bit of a goose bump because it just captured exactly what I wanted to say with that kind of haunting rock. Kind of swaggery but not heavy, it's got ... Duffy searches for the right words to express his emotion at hearing the song from the outside, "I mean nobody ... I don't know who makes music like that!"[6]
Between 2012 and 2016, Duffy appeared with the Kings of Chaos.
Personal life
In 2020, Duffy became engaged to former glamour model Leilani Dowding.[7]