Arnold is a multi-instrumental session musician as well as the lead guitarist of the bands Taylor Hawkins and the Coattail Riders and The Jimmy Chamberlin Complex.
He's also had a long standing working relationship with Simon Fuller, writing and producing songs for many of his various projects including "Now United."
He's also had recent success in the K-Pop world working with "Kiss Of Life, Shinee, Vanner and Twice" the latter earning him a platinum record for "&Twice."
He's produced and written underscore for their Karaoke and read along series which has featured "Frozen 1 and 2, Encanto, Wreck It Ralph, The Princess and The Frog, Moana, Beauty and The Beast" among many others.
In 2014 Gannin released a DVD of his original music through the "Drum Channel", featuring Taylor Hawkins, Jimmy Chamberlin, Simon Phillips, Terry Bozzio, and Gary Novak, along with Billy Mohler on Guitar/Bass and Tim Landers on Bass.