The Peterson Project, a bluesgrazz trio, will perfrom Sept. 7 at the Tuesday night jam with Lindsey Montana at Gritty McDuff’s. The group will play its blend of blues, bluegrass and jazz mash-up from 8 to 10:30 p.m. Members are Mark Peterson on vocals and harp; Mike Conant on strings and vocals; and Tim Clough on standup bass. Montana hosts a show of improvisation with three guest musicians every Tuesday at the restaurant in downtown Auburn.