An incredibly diverse lineup has just been announced for the the 2015 Free Press Summer Festival taking place June 6 and 7 in in Houston, Texas. Mastodon, Weezer and many others are on the bill.

Hard rock and metal takes up a small portion of the Free Press Summer Festival, but Weezer are slated as one of the festival's headliners. It'll be an interesting crowd roaming the festival grounds as Skrillex and R. Kelly have also received top billing. Mastodon are also listed as a marquee act, placed in between St. Vincent and Tears for Fears on the event's Facebook page.

Along with Weezer and Mastodon, bands such as Flogging Molly, Pentagram, Goatwhore, Pallbearer and Rocket From the Crypt will also play the festival.

"Free Press Summer Festival is a two-day celebration of arts and music held in Houston's beautiful Eleanor Tinsley Park," the event's website reads. "FPSF, as it is affectionately referred to by many of its fans, has had such world class artists as Jack White, Calvin Harris, Iggy Pop, Vampire Weekend, Willie Nelson, Snoop Dogg, Flaming Lips, Lauryn Hill, and hundreds of others grace its stage. Held on the periphery of downtown along the sprawling Buffalo Bayou, FPSF's unique blend of cityscape and natural environment create the perfect setting for its melange of visual and interactive arts, delicious local fare, and 6 stages of music to be enjoyed by its enthusiastic and diverse crowd. FPSF 2015 will be held June 6 and 7."

Passes for the two days are now available, ranging from general admission to 'Fancy Pants' tickets and the 'Silk Pajamas Package' -- each package offering different options for fans. To grab your own passes for June 6 and 7, click here.