After spending the first part of the summer touring with the Allman Brothers Band, Warren Haynes shifted into Gov’ Mule gear for yet another outing over the weekend. On Sunday, the rock-quartet performed at Weert, Holland’s Bospop Festival. During ‘Blind Man In The Dark,’ the group invited out longtime ABB/Mule collaborator Ron Holloway on saxophone. Recently, Gov’t Mule has also confirmed a pair of additional dates on its Take It Higher tour: August 31 at Lincoln, NE’s Rococo Theatre and September 3 at Aspen, CO’s Belly Up. Gov’t Mule’s European tour continues Tuesday at Zurich, Switzerland’s Kaufleuten Festival.