Raise your red Solo cups because Toby Keith has been announced as the fourth and final Country Jam 2015 headliner, joining fellow country superstars Tim McGraw, Keith Urban and the Band Perry.

The 24th annual Country Jam music festival is set for June 18-21 in Grand Junction, Colo., and it will be a full-fledged country music party, especially with the addition of the 'Drunk Americans' singer.

"We are very happy to add Toby Keith to our superstar lineup,” says Dhruv Prasad, executive vice president of live events for Townsquare Media, the festival's owner. "This is going to be an incredible four-day experience for our Country Jam attendees! And we’re not finished yet -- all I can say is, there are more great acts to be announced, so stay tuned."

McGraw was the first headliner to be announced, before last year's Country Jam even came to a close. Sibling trio TBP and Urban were added in the fall. Country Jam 2014's headliners included Lady Antebellum and Eric Church, among others, and 2015's lineup is proving to be equally exciting.

Tickets are available now for Country Jam 2015. General admission tickets start at $140 for a four-day pass, and VIP packages start at $640 for a four-day "Silver Pass," with “Gold Pass” packages available as well. More information on VIP package details and pricing is available online here.

Keep up with Country Jam's latest announcements on Twitter and Facebook.

Country Jam 2015 Headliners' Yearbook Pictures

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