Singer and rhythm guitarist best known as a member of pop punk band All Time Low alongside drummer Rian Dawson, guitarist Jack Barakat and bassist Zack Merrick. The band released three consecutive top ten albums from 2009 to 2013.
He began covering popular punk songs as a teenager before signing his first record deal in 2004.
He and his bandmates released their debut EP, The Three Words to Remember in Dealing with the End, in 2004 with a local record label called Emerald Moon.
He was born to Isobel and Peter Gaskarth. He has three siblings: Jillian, Helen, and Tom. In 2016, he married his high school sweetheart Lisa Ruocco.
James Maslow and Big Time Rush covered All Time Low's song "No Idea" on their 2011 album Elevate.