O.A.R. and Phillip Phillips will embark on a 25-day co-headlining tour, which will begin June 12 with a show at the Fabulous Fox Theatre in St. Louis.

The show will take place just two days after the release of O.A.R.'s latest album, 'The Rockville LP,' which features the group's latest single, 'Peace.' O.A.R. has been together since 1996. Their hit singles include 'Shattered,' 'Heaven' and 'Love and Memories.'

Phillip Phillips has also released new music for the summer. His newest album, 'Behind the Light,' went on sale May 19. Phillips has already reached the top of the charts twice since winning 'American Idol,' and his latest single, 'Raging Fire,' is a Top 10 hit.

Ticket prices for the St. Louis show range from $37.50 - $52.50. Tickets are on sale now.

O.A.R. and Phillip Phillips will continue to tour together through July, and will also make stops in Chicago on June 21 and Indianapolis on June 27.