The John Butler Trio are an Australian roots and jam band led by guitarist and vocalist John Butler, an APRA and ARIA-award-winning musician. They formed in Fremantle in 1998 with Jason McGann on drums and Gavin Shoesmith on bass. By 2009, the trio consisted of Butler with Byron Luiters on bass and Nicky Bomba on drums and percussion, the latter being replaced by Grant Gerathy in 2013.

https://en.wikipedia.org/wiki/John_But...
http://www.johnbutlertrio.com/