Daily Journal TUPELO – The remaining acts in the annual Down on Main concert series have been announced by the Downtown Tupelo Main Street Association. On Thursday, Aug. 18, opening act John & Jacob will perform and open for blues musician Grady Champion with J.J. Thames. Thursday, Sept. 15 is an evening of singers and songwriters with Heritage opening for Drew Holcomb and the Neighbors. This year marks the eighth straight summer of the Down on Main free summer concerts in Fairpark in Tupelo.