Toured with Guns N Roses between 1991 and 1993 as an additional
keyboard player
In 1999 he was voted "Outstanding Keyboardist of the Year" by the L.A. Music Awards.
In 2007 he contributed keyboard work to Billy Bob Thornton's album Beautiful Door.
Andreadis began learning keyboards, guitar and harmonica, and joined jam sessions with fellow New Jersey musicians Bruce Springsteen and Southside Johnny.
Conducts a weekly jam session in Hollywood at the Baked Potato with his band The Screaming Cocktail Hour.
At the age of three, his father bought him his first accordion.