Music notes: Roots-music masters perform in Glen Ellyn

<b>Roots-music masters</b>

For more than 30 years, the Holmes Brothers have been moving audiences with their three-way vocal harmonies and soulful music, a mix of blues, rock and soul. The trio, consisting of Wendell Holmes (guitar, piano), Sherman Holmes (bass) and "brother-in-spirit" Popsy Dixon (drums), are playing a free show in the suburbs this weekend.

<b>7:30 p.m. Friday, Aug. 8, at the McAninch Arts Center at College of DuPage, 425 Fawell Blvd., Glen Ellyn; atthemac.org.</b>

<b>Pop princesses</b>

Two of the biggest female pop stars will make stops at the United Center in the coming week. Katy Perry plays the second local date of her Prismatic World Tour on Friday, and young provocateur Miley Cyrus brings her Bangerz Tour to the venue the following Thursday, Aug. 14.

<b>Katy Perry performs at 7 p.m. Friday, Aug. 8, and Miley Cyrus performs at 7 p.m. Thursday, Aug. 14, at the United Center, 1901 W. Madison, Chicago. Tickets start at $29.50. Go to ticketmaster.com. </b>

<b>Local 'Mystery'</b>

Local brother-sister duo White Mystery has just released its fourth album of raw garage rock, "Dubble Dragon." Francis White's relentless drumming and Alex White's ferocious voice sound great on the record, but they're meant to be heard live on stage.

<b>9:30 p.m. Friday, Aug. 8, at the Hideout, 1354 W. Wabansia, Chicago. $10; hideoutchicago.com.</b>

<b>On the rise</b>

Pennsylvania hard-rock band Crobot, which has gained attention with performances at key events like South by Southwest, will perform this weekend in Arlington Heights.

<b>8 p.m. Saturday, Aug. 9, at HOME Bar, 1227 N. Rand Road, Arlington Heights. (Phosphene and 10 Years are also on the bill.) $10; homebarchicago.com.</b>