BOOTHBAY HARBOR — In advance of their upcoming tour with Tommy Emmanuel and David Grisman, the award-winning country-bluegrass crossover duo, Rob Ickes and Trey Hensley are traveling to Maine to perform at the Opera House on Sept. 14.

An evening with Ickes and Hensley features contemporary bluegrass paired with the spare country styling of classic ‘60s and ‘70s country music.

Trey Hensley’s resonant baritone voice is rich, expressive, and equally at ease with classic bluegrass, traditional country, and original compositions. Raised in Jonesborough, Tennessee, he began playing guitar and singing when he was 10 years old. Invited by Marty Stuart and joined from the wings by Earl Scruggs, Hensley landed on the Grand Old Opry when he was only 11. He has played with Johnny and June Carter Cash, Charlie Daniels, Ricky Skaggs, Steve Wariner, the Oak Ridge Boys, and Janie Fricke, among others.

Rob Ickes played bluegrass with his much-decorated band Blue Highway for over 20 years, during which time he was adjudged Bluegrass Dobro Player Of the Year 15 times. He has played on countless sessions, recording with artists including Merle Haggard, Dierks Bentley, Patty Loveless, and Alison Krauss. His most recent album, “Three Bells,” is a true dobro summit, collaborating with fellow greats Jerry Douglas and the late Mike Auldridge.

Advance purchase tickets are $25, day of show tickets $30, available through the Opera House box office at 86 Townsend Ave., or by calling 633-5159. The box office is open 8 a.m. to 2 p.m. Tuesday through Friday. Tickets and information are also available at www.boothbayoperahouse.com.

Doors for seating open at 7 p.m.; the performance begins at 7:30.