Dias was working with his own band out of his garage in Hicksville, New York, when he placed an ad in The Village Voice[1] in the summer of 1970 that read: "Looking for keyboardist and bassist.
Dias recorded as a permanent member of the band on 1972's Can't Buy a Thrill (with an electric sitar solo on the song "Do It Again"), on 1973's Countdown to Ecstasy, and on 1974's Pretzel Logic.
Though no longer a member of the band, Dias continued to work with them as a session guitarist, appearing on 1975's Katy Lied, 1976's The Royal Scam, and 1977's Aja.
Some of Dias's original material was recorded on a 1999 CD called Matter of Time, with Lisa Jason (Vocals) and Andy Bergsten (Bass) as the core of the band.
[citation needed] In 2014, he was playing with Denny Dias and Friends, a Boston-based band formed with Lisa Jason and Andy Bergsten with session musicians from around the country.