`Les Miserables` suffers due to bad singing: Adam Lambert

London: Singer Adam Lambert has slammed Tom Hooper`s new movie musical `Les Miserables` insisting the film "suffered massively" due to its all-star cast "pretending to be singers".

The former American Idol star, who began his career in musical theatre, took to Twitter to voice his disappointment with the big-screen adaptation of the hit Broadway production, reported Daily Star.

"Les Mis: Visually impressive w (with) great emotional performances. But the score suffered massively with great actors PRETENDING to be singers... It`s an opera. Hollywood`s movie musicals treat the singing as the last priority... Anne Hathaway as Fantine and (Aaron Tveit as) Enjolras were the exceptions for me. Helena B (Bonham) Carter and Sacha B (Baron) Cohen were great too," he said.

The entire Hollywood cast, including Hugh Jackman, Russell Crowe and Amanda Seyfried, sang live on set but Lambert insists the stars` vocals should instead have been pre-recorded and digitally enhanced.

"With that cast, they should have studio recorded and sweetened the vocals. Eponine`s (Samantha Barks`) voice was cool too... I felt like I should ignore the vocals and focus on the emotional subtext - but the singing was so distracting at times it pulled me out.

"The industry will say, `These actors were so brave to attempt singing this score live` but why not cast actors who could actually sound good? Sorry for being so harsh but it`s so true!"