This should have been a match made in disco heaven. Tron: Legacy is the sequel to a movie about a man trapped in a 1980s video game. Daft Punk — the vocoder-crazed, spacesuit-clad French electro duo — have always seemed like musicians trapped in a 1980s video game. Whether Daft Punk have created a worthy soundtrack is for filmgoers to decide. As for the album they've made — it's so-so mood music, full of dramatic, string-suffused sounds that are sometimes moving and sometimes just there. Daft Punk cut much of Tron: Legacy in London with a 100-piece orchestra. Far too often, the strings just hold one chord amid electronic noodling, though on "The Game Has Changed," they swell and flutter alongside acid-damaged synths and digital thuds, suggesting a particularly suspenseful Radiohead track.

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What's really missing on Tron: Legacy is groove. There are glimpses of the party-starting robots we've come to love: The sleekly digital "End of the Line" sounds like 21st-century Kraftwerk, and "Derezzed" is a pounding house track with synth squeals that recall Daft Punk's 1996 dance-floor classic "Da Funk." But that's about it as far as rhythm is concerned. Tron: Legacy is way more Hans Zimmer than Homework.

“Ambling Alp”

The "Ambling Alp" was the nickname of the six-and-a-half-foot-tall Primo Carnera. Though the song is named after the Italian-born 1930s heavyweight champion, Yeasayer are actually paying tribute to boxing legend Joe Louis with this first-person psychedelic dance-rock tune. “I was always interested in writing a song that had boxing mythology in it,” Yeasayer’s Chris Keating said. “It’s pretty fascinating: There were so many amazing characters, and it was so closely entwined with 20th century history.” Yeaseyer also invokes German champ Max Schmeling and hints at the historical significance placed on the historic bouts between the Nazi-era boxer and the African-American Louis.