It's not even summer yet, but we now know what we're doing in October. The Treasure Island Music Festival returns October 17 and 18 for its ninth annual weekend of great music on the island. The National and Deadmau5 are headlining the festival, and the lineup is stacked with exciting indie rock, electronic and hip-hop artists. Check out the full 2015 lineup below:

The National
Deadmau5
Robyn & La Bagatelle Magique
CHVRCHES
The War On Drugs
Azealia Banks
Father John Misty
Sound Tribe Sector 9
Run The Jewels
Panda Bear
Gorgon City
Jose Gonzalez
Hudson Mohawke
Deerhunter
Cashmere Cat
Drive Like Jehu
Viceroy
Lower Dens
Shamir
Ex Hex
Mikal Cronin
Baio
Viet Cong
Bob Moses
Ought
Skylar Spence

Weekend passes go on sale this Thursday at 10am at the festival's web site.

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