*Audio Challenge and Car Show, 1-5:30 p.m. June 27, Bob & Ron's Worldwide Stereo, 754 Route 309, Montgomery Township.
*Sheryl Crow's former guitarist Todd Wolfe, 8 p.m. June 26, McCoole's, 10 S. Main St., Quakertown. $10. Call (267) 221-8915.
*Pennsylvania Helping Nashville benefit concert will feature a lineup of more than 21 songwriters, artists and bands performing original songs. Performances will take place from 2 to 9 p.m. June 27 at Brownies 23 East, 23 E. Lancaster Ave., Ardmore. Tickets can be purchased at the door for $10 for adults and $5 for children. Check this link.
*Amy Regan (the girl with the guitar in the Hertz TV commercial), 7:30 p.m. June 25, Tin Angel, 20 S. Second St., Philadelphia, $10 cover. Call (215) 928-0978.