In 2001 Glover was among a host of bass players who contributed to Gov't Mule's double album "The Deep End", recorded as a tribute to the late Allen Woody, Mule's original bassist. Glover played on Deep Purple's "Maybe I'm a Leo", which was one of Woody's favourite songs. On 3 May 2003, in New Orleans, Glover also took part in a special concert performed by Gov't Mule featuring appearances from all bass players who had contributed to "The Deep End" album.