Acts returning to the festival from previous years included Japandroids, Pond, Nadine Shah, Bill Ryder-Jones, Jens Lekman, Ryley Walker, Ultimate Painting, Parquet Courts, DUDS, Gulp and Marika Hackman.

Other notable acts, including The Jesus & Mary Chain, Slowdive, Real Estate, The Lemon Twigs, The Moonlandingz, Rolling Blackouts Coastal Fever, Moses Sumney, Deerhoof, Laraaji, Kelly Lee Owens, Brix & the Extricated, Waxahatchee, Xylouris White and Starcrawler, performed at the festival for the first time.

The line up included The Shins, Joanna Newsom, Animal Collective, Bat For Lashes, Cat Power, Teenage Fanclub, Devendra Banhart, Local Natives, Goat, Savages, Thee Oh Sees, Broken Social Scene, Phosphorescent, Thurston Moore, Sam Beam & Jesca Hoop, M. Ward, Scritti Politti, Jeffrey Lewis & Los Bolts, Steve Mason, JD McPherson, Shura, Field Music, Omar Souleyman, King Gizzard & the Lizard Wizard, Bill Ryder-Jones, Kevin Morby, Eleanor Friedberger, Dr. Dog, Kelley Stoltz, U.S Girls, Money, Anna Meredith, Jenny Hval, Ezra Furman, Field Music, Sunflower Bean, Karl Blau, Tigercats, Lail Arad and J.F.

The line up included Tame Impala, Sufjan Stevens in his only 2015 European festival date and The War on Drugs, Mac Demarco, Future Islands, My Morning Jacket, Laura Marling, Django Django, Alvvays, Fat White Family, Slow Club, The Duke Spirit, The King Khan & BBQ Show, Torres, Oscar, Hinds, Low, Fuzz, Natalie Prass, Ought, Stealing Sheep, Giant Sand, Marika Hackman, Kevin Morby, East India Youth, Sleaford Mods, Girlpool, Du Blonde, Brakes, Wand, Jacco Gardner, Flo Morrissey, Metz, Pond, Kiran Leonard, Peter Matthew Bauer, H Hawkline, Ryley Walker, Fumaca Preta, Ultimate Painting, Jane Weaver, Andy Shauf, Saint Etienne, Giant Sand, Palma Violets, Meilyr Jones, Euros Childs, Ex Hex, Diagrams, Stephen Steinbrink and Crushed Beaks.

Other notable acts included St. Vincent, The Horrors, Yo La Tengo, John Grant, Stephen Malkmus and the Jicks, White Denim, British Sea Power, Gruff Rhys, Tune-Yards, Unknown Mortal Orchestra, Ezra Furman, Adult Jazz, The Wave Pictures, Cate Le Bon, Sweet Baboo, H. Hawkline, Lucius, Perfume Genius, Lau, Archie Bronson Outfit, The Felice Brothers, Marissa Nadler, Benjamin Booker, The Radiophonic Workshop, British Sea Power, Jenny Lewis, Stealing Sheep, Kiran Leonard, Tiny Ruins, Benjamin Clementine, Johnny Flynn & The Sussex Wit, Sam Lee, Temples, Laish, Pink Mountaintops, Ghost of a Sabre Toothed Tiger, Woods, and Tinariwen.

The line-up included Sigur Rós, Belle and Sebastian, David Byrne & St Vincent, Dinosaur Jr., Efterklang, Warpaint, Jens Lekman, Eels, Ralfe Band, Allo Darlin', Mark Mulcahy, Doug Paisley, Matthew E. White, Serafina Steer, Parquet Courts, Wolf Alice, Pokey Lafarge, Ethan Johns, Cass McCombs, Frontier Ruckus, Ed Harcourt, East India Youth, Dutch Uncles, RM Hubbert, Golden Fable, Trembling Bells & Mike Heron, Daughn Gibson, Frightened Rabbit, The Barr Brothers, The Walkmen, Charlie Boyer & the Voyeurs, Bo Ningen, Palma Violets, Public Service Broadcasting, Strand of Oaks, Marika Hackman, Landshapes, Evans the Death, Tigercats, Julianna Barwick, Caitlin Rose, William Tyler, Damien Jurado, Daughter, Deap Vally, Catfish and the Bottlemen, Diana Jones, Braids, King Khan and Doug Paisley.

Also playing were Dirty Three, Midlake, The Low Anthem, Roy Harper, Mark Lanegan, Tindersticks, Jeffrey Lewis, Robyn Hitchcock, Graham Coxon, Villagers, Patrick Watson, Justin Townes Earle, First Aid Kit, Deer Tick, Anna Calvi, I Break Horses, Moulettes, Gravenhurst, The Futureheads, Mountain Man, Alt-J, Islet, Sleep Party People, Frank Fairfield, Woods, Patti Smith, Tindersticks, Lanterns on the Lake, Jonathan Wilson, Leif Vollebekk, Van Dyke Parks, Deer Tick, Francois & the Atlas Mountains, Dirty Beaches and more.

Also playing were Midlake, Laura Marling, The Walkmen, Wild Beasts, The Fall, Lykke Li, Tinariwen, The Unthanks, M. Ward, Gruff Rhys, Okkervil River, Phosphorescent, John Grant, Clap Your Hands Say Yeah, Best Coast, White Denim, Tune-Yards, Willy Mason, The Black Angels, Wooden Shjips, Jolie Holland, Josh T Pearson, Kurt Vile, Micah P Hinson, James Yorkston, Gordon Gano & the Ryans, Caitlin Rose, The Leisure Society, Brakes, Zola Jesus, Austra, Beth Jeans Houghton, Timber Timbre, Allo Darlin, Bob Log III, The Unthanks, Woods, Midlake, Lanterns on the Lake, Sam Amidon and more.

Also playing were Deer Tick, Wolf Parade, The Low Anthem, The Felice Brothers, Woodpigeon, Phosphorescent, The Wilderness of Manitoba, The Unthanks, Iron & Wine, The Mountains and the Trees, Annie & The Beekeepers, Dylan LeBlanc, Joe Pug, CW Stoneking, Charlie Parr, Frank Fairfield, Daniel Lefkowitz, Monotonix, The Mountain Goats, The New Pornographers, Caribou, The Antlers, Citay, Freelance Whales, a Jarvis Cocker DJ set and many more.

Also playing were The Acorn, Alela Diane, Beth Jeans Houghton, Blitzen Trapper, The Boy Least Likely To, The Broken Family Band, Charlie Parr, Darren Hayman, David Thomas Broughton, Dent May & His Magnificent Ukulele, Dirty Projectors, The Dodos, Efterklang, Herman Dune, The Horrors, Josh T Pearson, The Leisure Society, The Low Anthem, Malcolm Middleton, Mumford & Sons, Neko Case, Okkervil River, Richmond Fontaine, Shearwater, Steve Earle, Vetiver and Wildbirds & Peacedrums.

Also appearing were A Hawk And A Hacksaw, Akron/Family, American Music Club, Billy Childish and the Musicians of the British Empire, Bon Iver, Brakes, British Sea Power, Darren Hayman playing Hefner songs, Dirty Three, Jason Molina, Jeffrey Lewis, Kimya Dawson, Kurt Wagner, Laura Marling, Low, Micah P Hinson, The Mountain Goats, Noah & the Whale, Richard Hawley, Robyn Hitchcock, Someone Still Loves You Boris Yeltsin, Sons of Noel and Adrian, Sun Kil Moon, Tindersticks, Two Gallants, The Wave Pictures and Zombie-Zombie.

[12] It was headlined by Yo La Tengo, Super Furry Animals and Lambchop, and also featured Archie Bronson Outfit, Architecture in Helsinki, The Bees, Brakes, British Sea Power, The Broken Family Band, The Concretes, Danielson, Darren Hayman, Dawn Landes, Euros Childs, Frida Hyvönen, Herman Dune, Howe Gelb (who also curated the two main stages on the Friday, headlining the Big Top stage with a Giant Sand jam session), I'm from Barcelona, James Yorkston, Jeffrey Lewis, Jens Lekman, Joan As Police Woman, John Parish, Johnny Flynn, Josh T Pearson, King Creosote, Loney Dear, Malcolm Middleton, Midlake, Pete and the Pirates, Robyn Hitchcock (who was accompanied by John Paul Jones), Scout Niblett, Seasick Steve, Stephanie Dosen, The Twilight Sad, Willard Grant Conspiracy and Zombie-Zombie.

Other artists included Absentee, The Boy Least Likely To, Brakes, British Sea Power, Chris T-T, Darren Hayman, Dawn Landes, Ed Harcourt, El Perro Del Mar, Electric Soft Parade, Emmy the Great, Fanfarlo, Frightened Rabbit, Gravenhurst, Guillemots, Holly Golightly, Howe Gelb, I'm from Barcelona, James Yorkston, Jeremy Warmsley, Jim Noir, Jolie Holland, Kathryn Williams, Metronomy, Micah P Hinson, Richard Hawley, Simple Kid, Suburban Kids with Biblical Names, and Tilly and the Wall.