It's your last chance to enjoy a free concert Thursday evening as that's the finale to the Rockin' The Rivers series as presented by Port Huron Parks and Recreation. The headliners are the Elton Rohn band, featuring the music of Elton John, complete with costume changes and a set list straight from the 70's. The band's Ron Camilleri says the popularity of tribute bands is due in part to getting a chance to see an entertainer at their peak... or at least a good simulation of a particular entertainer. Rockin' The Rivers starts at 6pm with the openers and Elton Rohn hitting the stage about 7pm. The concerts are at Keifer Park, alongside the St. Clair River.