Their first live performance was in January 1994 at the London Forum supporting Steve and Jasmine's father, classic rock singer Paul Rodgers (of Free & Bad Company fame).
Terry Reid, Simple Minds, Yes, Mott the Hoople, Buddy Guy, Paul Young, The Alan Bown Set, Goldie & The Gingerbreads, Jimmy James and the Vagabonds, Geno Washington and the Ram Jam Band, Spooky Tooth, the Jeff Beck Group (feat. Rod "The Mod" Stewart and Ronnie Wood) Chris Rea, Paul Rodgers, David Coverdale, Dire Straits, Marc Almond / Soft Cell etc. many of whom went on to superstardom.
He sang with Marcelo D2's version of "Hey Joe", popularized in the voice and guitar of Jimi Hendrix, and covered by several big names in rock and pop music in general and Seal, Paul Rodgers, Steve Ray Vaughan, Brian May, David Gilmour, commonly performed in group shows like Guitar Legends (Barcelona, 1992).
Rock Therapy was a 1996 one-off project consisting of Queen guitarist Brian May, Rolling Stones drummer Charlie Watts, plus a number of guest vocalists including Sam Brown, Andy Fairweather-Low, Paul Rodgers and Lulu.
It has hosted a wide variety of guests and performers in its history, including Tiesto, Bobby Orr, Pearl Jam, Judas Priest, Megadeth, Metallica, Slipknot, Stone Temple Pilots, Paul Rodgers, Scorpions, Goo Goo Dolls, Dream Theater, In Flames, Deftones, Sum 41, Jean Chrétien, Desmond Tutu, Gordie Howe, Prince Charles, Diana Princess of Wales and Tina Turner.
Pope John Paul II | Paul McCartney | Paul Simon | Paul Newman | Pope Paul VI | St Paul's Cathedral | Paul | Jean-Paul Sartre | Peter Paul Rubens | Paul Robeson | Paul Anka | St. Paul | Paul Hindemith | Paul Revere | Paul Weller | Paul Klee | Saint Paul | Paul Kelly | Paul Cézanne | John Paul Jones | Paul Ryan | Paul Gauguin | Paul Oakenfold | Jean Paul Gaultier | Paul the Apostle | Paul Keating | Paul Auster | Pope John Paul I | Paul Martin | Paul Whiteman |
He has played variously in his career live or recording with Pete Townshend, Bad Company, Slash, Paul Rodgers, Roger Daltrey, Joe Satriani, British Rock Symphony, Yngwie Malmsteen, Gary Brooker, Zakk Wylde and many more.
Underwood began his career with The Outlaws in 1961 and has been one of the most influential figures in the British rock genre ever since, along the way playing in The Herd (with Peter Frampton), Episode Six, Quatermass, Peace with Paul Rodgers, Strapps, Gillan (with four UK top twenty albums, two of which were top three), and Quatermass II.
It is the first album he has worked on since 2008's The Cosmos Rocks with Queen + Paul Rodgers, and his first solo album since 1998's Electric Fire.