Vince Gill's 16th annual Jammin' to Beat the Blues concert is less than a week away, and now we know who will be joining the singer on stage.

Ashley Monroe, Charlie Worsham, Jenny Gill, Holly Williams and the band Striking Matches will all perform for the show, which will be held on Tuesday (April 1) at Nashville's Ryman Auditorium.

The concert, which benefits Mental Health America of Middle Tennessee, has invited some of country music's biggest stars since 1999, including Blake Shelton, Taylor Swift, Lee Ann Womack and Tanya Tucker.

Gill and Keith Urban are also preparing for the fifth annual We're All 4 the Hall benefit concert, which will be held on Tuesday, May 6, at Nashville's Bridgestone Arena. Gill and Urban will sing for the star-studded event, which raises money for the Country Music Hall of Fame and Museum, along with more than a dozen artists, including Mary Chapin Carpenter, Reba McEntire, Carrie Underwood, Kacey Musgraves and Deana Carter.

A very limited number of tickets for the Jammin' to Beat the Blues concert are on sale now and available for purchase here.

In addition to performing for benefit shows, Gill is also performing several of his own concerts, including stops in Georgia, Utah and Nevada over the next few weeks. See a list of all of his upcoming shows here.