Tommy's uncle Joe Dimeo, a session musician who studied guitar with the great Joe Pass, gave him his first acoustic guitar and taught him his first riff, "Walk This Way", when he was 12 years old. He continued to learn on his own by ear and never had formal guitar lessons.

Before joining Lambert's band in 2009, Tommy played guitar with various local metal bands including "Turn Of The Screw", "Eat The Crow", "Clown X" and "Exit Music" and also played for Mandi Perkins. He arranges music and plays both guitar and bass parts for "Mouthlike", in a genre described as Alternative/Ambient/Industrial
Adam Lambert's band

Tommy originally auditioned for lead guitar player in Adam Lambert's band, but that position was already filled by Monte Pittman, so he was asked to play bass guitar instead. From November 2009 to May 2010, Tommy took part in the promotion of Adam Lambert's album "For Your Entertainment" and accompanied him on several TV shows, including the American Music Awards, Ellen, Oprah, Jay Leno and X Factor Finland[citation needed]. He also appeared in three of Lambert's music videos, "For Your Entertainment", "Whataya Want From Me" and "If I Had You".
From June to December 2010, he performed in Adam Lambert's international Glam Nation Tour, which ended at Club Nokia in Los Angeles on December 16, 2010.
Monte Pittman's band

Tommy is currently playing bass on Monte Pittman's solo shows, featuring songs from his latest album, "The Deepest Dark".
Philanthropy

In December 2010, he posed for Adam Bouska, the founder of the NOH8 Campaign, to help raise funds to overturn California Proposition 8, the initiative to ban gay marriage in the state of California. To date, this is the most requested picture on the NOH8 Campaign website