The Black Keys, The Black Crowes and Brandi Carlile were announced as performers for the inaugural Evolution Festival, set to take place in St. Louis, Missouri on August 26th and 27th at Forest Park. Other performers on the lineup include Ice Cube, Ben Harper, Modern English, Morgan Wade, and Brittany Howard. Tickets are on sale now via EvolutionFestival.com. Weekend general admission tickets start at $99.50 per person, with three levels of Weekend VIP experiences starting at $199.50 per person, all-inclusive hotel packages and a limited number of premium cabanas. A portion of the ticket sales will be donated to the non-profit Forest Park Forever and St. Jude Children's Research Hospital's Music Gives campaign to raise money in the fight against childhood cancer and other life-threatening diseases. Editorial credit: Astrobobo / Shutterstock.com