The lineup included a couple of nods to the 1960s and 1970s with German krautrock pioneers Faust and masters of psychedelic Tropicalia Os Mutantes.

The line-up was heavy on psychedelic and post-rock music, also including Mission of Burma, Papa M (the solo project of Slint guitarist Dave Pajo), The Black Angels, Bardo Pond, a mixed media presentation by Mark Hosler, a founding member of Negativland.

The line-up also included the first live collaboration between Lexington-based Casino Versus Japan and Deerhunter frontman Bradford Cox (aka Atlas Sound),[1] who would later tour together in 2010.

Another key concept behind Boomslang was the inclusion of non-musical features, including a 2009 circus-themed fashion show and a carnival scene that took place in the parking lot of one of the primary venues, stretching the boundaries of traditional rock culture.

Film screenings at the 2011 Queerslang included special guest Meredith Heil from UC Santa Cruz, who showcased her short documentary, "Whistlin’ Dixie."

Blonde Redhead, Clinic, BODY/HEAD, Saul Williams, ADULT., Youth Lagoon, Com Truise, The Blow, Bleached, Chelsea Wolfe, Pallbearer, Thou, Cunnin Lynguists, Grails, Marnie Stern, Scout Niblett, No Joy, Heatsick, Pop.

1280, ITAL, Inter Arma, Pure X, Dope Body, Locrian, Dent May, Idiot Glee, Graham Lambkin/Jason Lescalleet, Fielded, Jamaican Queens, Young Widows, Nemo Achida, A Tribe Called Lex, Ancient Warfare, Jeanne Vomit Terror & Ed Sunspot, Carl Calm, Motherplant, Potty Mouth, (OHLM), Too Many Drummers, Electric Citizen, Mayonnaise, Stampede.

The Jesus & Mary Chain, Jeff Mangum (Neutral Milk Hotel), Das Racist, Cloud Nothings, Deerhoof, Saint Vitus, Negativland, Futurebirds, Girl in A Coma, Oneohtrix Point Never, Weedeater, The Music Tapes, The Apache Relay, Author & Punisher, Buke and Gase, The Younger Lovers, São Paulo Underground, Five Knives, Sleeping Bag, William Tyler, Gary War, Janka Nabay & The Bubu Gang, White Hills, Hive Mind, Dinosaur Feathers, XAMBUCA, Merkaba, Sourvein Swans, Pelican, Tom Tom Club, Ty Segall, Sir Richard Bishop, Julianna Barwick, Horseback, Secret Chiefs 3, The Ssion, MEN, Woodsman [8] Rhys Chatham, Death, Sonic Boom, Akron/Family, Ben Frost, Glass Candy, Harlem, Rangda (featuring Ben Chasny, Chris Corsano, and Sir Richard Bishop), Wooden Shjips, His Name Is Alive, Wolf Eyes, Thee American Revolution, Burning Star Core, Casino Versus Japan, Phantom Family Halo, Sapat, The Barry Mando Project, Blood Carries Disease, Brothertiger, City Center, Cymarshall Law, Devine Carama, Deluxin’, Diminished Men, DJ Warrenpeace, Everyone Lives Everyone Wins w/ Ghost Affirmation, Paul K & the Weathermen, Ford Theatre Reunion, Global.Ken, Ian Thomas, Jews and Catholics, J. Marinelli, Jovontaes, Jozef van Wissem, Loose Change, Lucky Pineapple, March Madness Marching Band, Milyoo, Cheyenne Mize, Mr. Daybony, Naam, The Nativity Singers, The N.E.C., Nemo Quotidian, Pezhed & the Blipsquad, Psychic Steel, R. Keenan Lawler, The Royal Batfangs, The Seedy Seeds, Silverware, Sound/Vision, Soft Opening, Spooky Qs, Stampede, Heidi Swedberg, Tiny Folk, Warmer Milks, Vee Dee, The Web, Zak Riles, WRFL DJs [9][10] Faust, Os Mutantes, The Black Angels, Shipping News, Papa M, Rachel's (Rachel Grimes), Negativland (Mark Hosler), Atlas Sound, Bardo Pond, Disappears, Teeth Mountain, Hair Police, Burning Star Core, Casino Versus Japan, These United States, Lush Life, Tiny Fights, Sound/Vision, Everyone Lives Everyone Wins [11]