A notable early composition includes some of the music for the game Traffic Department 2192; Pallett moved on to scoring films, to composing two operas while in university.

Aside from their solo oeuvre and work with Arcade Fire, Pallett has contributed arrangements and instrumentation to the works of pop acts like Duran Duran, Pet Shop Boys, Robbie Williams, Taylor Swift and Ed Sheeran, as well as rock performers such as R.E.M., Linkin Park, Franz Ferdinand, the National and Alex Turner.

Pallett did not intend to sell the song for this purpose, but its use was authorized due to an alleged miscommunication with their record label, Tomlab.

[8] Uncomfortable with receiving a prize sponsored by a mobile phone conglomerate, Pallett gave the money away to bands they liked who needed financial assistance.

Instead of litigation, Pallett and their booking agent Susanne Herrndorf approached the company for sponsorship for a music festival of their curation.

The resultant Maximum Black Festival featured Final Fantasy, The Dirty Projectors, Deerhoof, Frog Eyes, Max Tundra, Six Organs of Admittance and others.

The song "Hey Dad" contains a melody borrowed from the Nintendo video game "Super Mario Bros. 3"; specifically it is the music from the "Coin Heaven" bonus/hidden stages.

On it, six Lukashevsky originals were reconfigured for a 35-piece big band, the Toronto-based St. Kitts Orchestra (which includes Drumheller's Nick Fraser, Paul Mathew of the Hidden Cameras, and a whistling Andrew Bird, among others).

[14] Following the release of Heartland, Pallett has toured with guitarist/percussionist Thomas Gill[15] and more recently with Rob Gordon and Matt Smith, their former collaborators in Les Mouches.

Pallett was once the violinist of another Toronto band called Picastro, and briefly played keyboard in SS Cardiacs (with Leon Taheny, Jessie Stein and Michael Small in 2005).

Pallett has also recorded and toured with Jim Guthrie, The Hidden Cameras, Royal City, The Vinyl Cafe, Gentleman Reg, and Arcade Fire (they co-wrote the strings arrangement for their albums Funeral and Neon Bible).

Pallett also wrote the string arrangements for the Beirut album The Flying Club Cup, as well as provided vocals for the track "Cliquot".

[21] Most recently, Pallett provided orchestration for The Age of the Understatement, the debut album of the English supergroup The Last Shadow Puppets, formed by co-frontmen Alex Turner (Arctic Monkeys) and Miles Kane (The Rascals).

In June 2009, at Luminato, Toronto's annual festival of arts and creativity, Pallett provided part of the live soundtrack for the outdoor screening (at Yonge-Dundas Square) of the 1919 silent German horror film Tales of the Uncanny, alongside Canadian instrumental band Do Make Say Think and German electronica artist Robert Lippok.