Acclaimed songwriters and musicians Ray LaMontagne and Gregory Alan Isakov will join forces for an extensive co-headline tour this fall.

The 17-date run will include a stop at Arizona Financial Theatre in downtown Phoenix on Sunday, Sept. 15.

Tickets for the show, which will feature an opening set by special guests The Secret Sisters, go on sale at 10 a.m. Friday, April 26. Full details at www.raylamontagne.com/tour.

LaMontagne has released eight studio albums, six of which have reached Top 10 on Billboard’s Top Rock Albums chart and Billboard’s Digital Albums chart. Additionally, his 2010 album “God Willin’ & the Creek Don’t Rise” won the Grammy for Best Folk Album and was nominated in the coveted Song of The Year category for “Beg Steal or Borrow.”

Having worked with producers Ethan Johns, Dan Auerbach of the Black Keys and Jim James of My Morning Jacket, LaMontagne’s catalog has been called everything from “a perfect throwback to the lost art of the album-length format,” from Entertainment Weekly to “epic and magical,” from Rolling Stone.

Grammy-nominated singer-songwriter Isakov has garnered more than 1 billion streams and has over 7 million monthly Spotify listeners. He is in the midst of a landmark year following the release of his new album “Appaloosa Bones.”