Adam Lambert has one heck of a set of pipes, so it's not surprising that he'd have strong opinions about musicals. The 'American Idol' runnerup took to Twitter to voice his frustrations about the new film adaptation of 'Les Miserables.' Basically, he thought the movie wasn't bad -- but that a lot of the singing was.

Lambert went to Twitter to vent about the blockbuster, writing, "Les Mis: Visually impressive w great Emotional performances. But the score suffered massively with great actors PRETENDING to be singers." Ouch! Still, Lambert said there were some good vocals in the movie: "Anne Hathaway as Fantine and Enjolras were the exceptions for me," he wrote, adding, "Helena B Carter and Sasha B Cohen were great too." He also expressed appreciation for the character of Eponine, played by Broadway vet Samantha Barks -- who took the role from Taylor Swift. We're sure Lambert may have had issues with as well.

Lambert clarified as well that he doesn't think it was just the cast that were flawed, but also the production process. The movie made a marketing point out of recording the vocals live, not using prerecorded music and lip syncing, and Glambert thinks that was a bad idea. "And I do think it was cool they were singing live- but with that cast, they should have studio recorded and sweetened the vocals," he tweeted matter-of-factly.

He vented some more about the Hollywood machine. "The industry will say 'these actors were so brave to attempt singing this score live,'" he wrote, "but why not cast actors who could actually sound good?" Tell us how you really feel, Adam! Knowing that the truth hurts, he added, "Sorry for being so harsh but it's so true!"

It appears that Lambert came under some criticism for his own criticism, because he tossed in some quips later on that appeared to be a response for blacklash:

Basically, Lambert called out Amanda Seyfried, Hugh Jackman and Russell Crowe for not being able to sing. Do you agree with his assessment of the movie? Sound off in the comments!

Watch the Adam Lambert 'Never Close Our Eyes' Video