Co-founder and lead vocalist of the rock band Spin Doctors, who are notable for their 1990s hits "Two Princes" and "Little Miss Can't Be Wrong." In 2009, he put out a solo album called Pancho and the Kid, and a year later he released an EP called Songs from the Summer of Sangria.
He went to elementary school in Sydney, Australia and moved to Princeton, New Jersey where he attended middle school and high school. He attended Bennington College for one year, and moved to New York City in 1988, at the age of 20, With $100 and an acoustic guitar.
He previously played in a band called Trucking Company in the late 1980s in NYC. During a 1999 tour, he lost his voice due to a rare acute form of vocal cord paralysis.
Born in Honolulu, Hawaii, he is the son of Vietnam veteran and automotive authority Ken Gross and relationship self-help author Toby Green. He was married to actress Laura Benanti from 2005 to 2006. He then married actress Lindsey Nicole Chambers, the lead in the Broadway tour of Kinky Boots.
He fronted a popular '90s band like John Rzeznik of the Goo Goo Dolls.