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'Trolls' packs great music but little magic (PG)

It took Hollywood more than half a century to bring the trolls phenomenon to the screen. The little ugly dolls with crazy long hair are featured in the “Toy Story” films. But the poor critters, who were introduced to the American market in the early 1960s, have never had a film of their own.

In comes DreamWorks Animation and its shiny new mass-market product, the computer-animated 3D family musical adventure “Trolls,” a $120 million tentpole extravaganza featuring a nicely varied selection of pop, R&B, hip-hop, and folk songs produced by pop god Justin Timberlake, who sings quite a few himself.

Timberlake does a rousing rendition of “Can’t Stop the Feeling!” and has several memorable duets — with Anna Kendrick on “True Colors” and “September” and with Gwen Stefani on “What U Workin’ With?” — while he and Stefani are joined by Ron Funches for a funny “Hair Up.”

Other vocalists include Zooey Deschanel and Ariana Grande, and there’s even a fun, slightly spooky version of Paul Simon’s “The Sounds of Silence” sung by Kendrick.

Timberlake and Kendrick lead the cast as a pair of young trolls named Branch and Poppy who team up to save Troll Village, despite having fundamentally opposite views of the world.

Branch, who is given a wonderfully woebegone tone by Timberlake, is a prickly pessimist, a grouch who would rather hunker down alone in his hovel than take part in Troll Village’s joy-stuffed daily routine. His lack of joy makes him an outsider, an outcast.

See, most trolls are like Poppy, psychotically happy, boundlessly optimistic airheads who spend their every waking hour hugging, singing, laughing, and tripping the light fantastic under a really big groovy disco ball.

Trolls are small, defenseless beings who live in a secret corner of the forest. But when Poppy throws a particularly loud bash, their location is discovered by the Bergens, an ugly race of monsters whose only joy in life is the taste of raw troll, sushi-style.

An evil Bergen chef (Christine Baranski) swoops up the revelers one by one into her fanny pack. Only Poppy and Branch escape. Convinced their fellow trolls will be kept alive until the Bergen royal family can prepare a public feast, they journey to the lion’s den with a daft rescue plan.

Despite the competent animation, the great tunes and funny voice work by co-stars Russell Brand and John Cleese, “Trolls” is a lackluster entry. The story is clichéd and predictable. We get disco tunes, disco balls, troll-eating villains and a “Mission Impossible” rescue. But overall, the film has no real magic.

Voices: Justin Timberlake, Anna Kendrick, Zooey Deschanel, Gwen Stefani, Russell Brand, John Cleese.

Directors: Walt Dohrn, Mike Mitchell.

Screenwriters: Jonathan Aibel, Glenn Berger.

A 20th Century Fox release. Running time: 92 minutes. Mild rude humor. Playing at area theaters.