Soundtrack album and various collaborative projects (2007–2009)
Over the 2005 winter holidays, Stevens recorded an album with Rosie Thomas and Denison Witmer playing banjo and providing vocals. In April 2006, Pitchfork erroneously announced that Stevens and Thomas were having a baby together, and were forced to print a retraction. Witmer and Thomas later admitted it was an April Fools' prank. In December 2006, the collaborative recordings were digitally released by Nettwerk as a Rosie Thomas album titled These Friends of Mine. The album was released in physical form on March 13, 2007.
On May 31, 2007, Asthmatic Kitty announced that Stevens would be premiering a new project titled The BQE in early November 2007. The project, dubbed a "symphonic and cinematic exploration of New York City's infamous Brooklyn–Queens Expressway", was manifested in a live show. The BQE featured an original film by Stevens (shot in Super 8 film and standard 16 mm), while Stevens and a backing orchestra provided the live soundtrack. The performance used 36 performers which included a small band, a wind and brass ensemble, string players, horn players, and hula hoopers. There were no lyrics to the music. The BQE was commissioned by the Brooklyn Academy of Music as part of their Next Wave Festival and performed on three consecutive nights from November 1–3, 2007.
The performance sold out the 2,109 seat BAM Opera House without any advertising. After three weeks of rehearsing the piece with the three dozen musicians involved, he presented the 30-minute composition. The BQE was followed by an additional one hour of concert by Stevens and his orchestra. The BQE won the 2008 Brendan Gill Prize. In April 2007, in Brooklyn and Philadelphia, Stevens made unannounced appearances on Thomas's tour in support of this album. In 2007, he played shows sporadically, including playing at the Kennedy Center to celebrate the tenth anniversary of the Millennium Stage concerts.
Stevens has also worked as an essayist, contributing to Asthmatic Kitty Records' "Sidebar" feature and Topic Magazine. He wrote the introduction to the 2007 edition of The Best American Nonrequired Reading, a short story about his early childhood education and learning to read titled How I Trumped Rudolf Steiner and Overcame the Tribulations of Illiteracy, One Snickers Bar at a Time. That winter, he hosted an "Xmas Song Exchange Contest" in which winner Alec Duffy won exclusive rights to the original Stevens song "Lonely Man of Winter". The track could only be heard by attending private listening parties at Duffy's home in Brooklyn and at places around the world until 2018, when Duffy negotiated with Asthmatic Kitty Records to release the song with all proceeds going towards Duffy's organization JACK.
Stevens has contributed to the music of Denison Witmer, Soul-Junk, Half-handed Cloud, Brother Danielson, Danielson Famile, Serena-Maneesh, Castanets, Will Stratton, Shannon Stephens, Clare & the Reasons, Little Scream, and Liz Janes. In 2007 alone, Stevens played piano on The National's album Boxer, produced and contributed many instrumental tracks to Rosie Thomas's album These Friends of Mine, multiple instruments on Ben + Vesper's album All This Could Kill You and oboe and vocals to David Garland's 2007 album Noise in You.
He has contributed covers of Tim Buckley ("She Is"), Joni Mitchell ("Free Man in Paris"), Daniel Johnston ("Worried Shoes"), John Fahey ("Variation on 'Commemorative Transfiguration & Communion at Magruder Park"), The Innocence Mission ("The Lakes of Canada"), Bob Dylan ("Ring Them Bells"), Drake ("Hotline Bling"), Prince ("Kiss") and The Beatles ("What Goes On") to various tribute albums. His versions of "Free Man in Paris" and "What Goes On" are notable for only retaining the lyrics of the original, as Stevens has taken his own interpretation on the melody and arrangement. His rendition of "The Star-Spangled Banner" has a similar rearranged melody and arrangement as well as a whole new verse.
His songs "The Tallest Man, The Broadest Shoulders" and "All the Trees of the Field Will Clap Their Hands" were featured in the 2006 British comedy-drama Driving Lessons, starring Julie Walters and Rupert Grint. In 2008, he produced Welcome to The Welcome Wagon, the debut album of Brooklyn-based husband and wife duo Vito and Monique Aiuto, The Welcome Wagon.
In February 2009, Stevens contributed "You Are the Blood" to the AIDS benefit album Dark Was the Night produced by the Red Hot Organization. In April 2009, Stevens uploaded a song about director Sofia Coppola online. This song was written while Stevens was in college, from a series of songs about names.
Stevens recalled:
A few weeks later, our dog got hit by a snowplow and I forgot all about the problem of names. Until college, when I learned to play the guitar, and, as an exercise, started writing songs (very poorly executed) in the same way that Henry Ford produced the automobile: assembly-line-style. I wrote songs for the days of the week (poor Monday!). Songs for the planets (poor Pluto!). Songs for the Apostles (poor Judas!). And, finally, when all else failed, I started a series of songs for names. [...] Each piece was a rhetorical, philosophical, musical rumination on all the possible names I had entertained years before when my parents had given me the one chance to change my own. Oh fates! I sang these songs in the privacy of my dorm room, behind closed doors, pillows and cushions stuffed in the air vents so no one would hear. And then I almost failed Latin class, my grades plummeted, my social life dissolved into ping pong tournaments in the residence halls, and, gradually, my interest in music (or anything divine, creative, fruitful, enriching) completely waned. I turned to beer. And cigarettes. And TV sitcoms. And candy bars. Oh well! A perfectly good youth wasted on junk food! That is, until a few months ago, when I came across some of the old name songs, stuffed onto tape cassettes, 4-track recorders, forgotten boxes, forgotten shelves, forgotten hard drives. It was like finding an old diary, or a high school yearbook, senior picture with lens flare and pockmarks, slightly cute and embarrassing. What was I thinking?