Sometimes, a manager needs to tell their client "no" when it comes to pursuing a certain project. But for these folks, it looks like those managers had the day off when the offer to record music came around.

Pitch Perfect, the story about an all-girls acapella group, hit theaters last week and while the cast of that movie actually CAN sing, there are plenty of actors who think playing a musician in a movie makes them qualified to be an actual musician. Or even worse, they know they can't sing, but decide to autotune the hell out of some songs and slap it together as an album. From A-list actresses to D-list reality stars, check out our list of actors who can't sing, but decided to try anyway. Cover your ears, folks.

1. Paris Hilton

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Okay maybe she wasn't a "real" actress, per se (House of Wax, anyone?), but we'd watch her act before listening to her sing any day. The reality star was one of the most powerful women in the world at one point and even took her turn at recording a self-titled album in 2006 simply called Paris. In a true sign that America is doomed, it reached No. 6 on the Billboard 200, but no one wanted her to go anywhere near a recording studio once the novelty factor wore off. And her recent attempt at a DJ career was even more disastrous.


2. Bruce Willis

In addition to singing on the Moonlight and Rugrats Go Wild soundtracks, Bruce also released an ill-advised album called The Return of Bruno in 1987. The album did include the hit Respect Yourself, which peaked at No. 5 in the US.


3. Jennifer Love Hewitt

"Jennifer is a triple threat. She's not only an actor, but also a dancer and terrible singer," once noted comedian Sarah Silverman. Sadly, she was pretty much on the mark. Despite four albums, nearly a dozen singles and a song on the I Know What You Did Last Summer soundtrack, her music career never got off the ground. She finally took the hint and quit the music industry in 2002.


4. Eddie Murphy

In addition to singing for the Shrek films, Eddie released five notoriously panned albums in the '80s and early '90s, but did reach No. 2 in 1985 with the single Party All the Time. He's also responsible for the worst song of Michael Jackson's career.


5. Raven Symone

Everything Raven touches turns to gold -- except when it comes to music. The actress has sung on The Cheetah Girls and That's So Raven soundtracks, as well as released four of her own albums, but none of them ever cracked the top 50 on the charts. She's had better luck on the stage though and is currently starring in the Broadway revival of Sister Act.


6. David Hasselhoff

Before Baywatch made him a bazillionaire, David starred on The Young and The Restless in the '70s and early '80s, ultimately translating that into a singing career. He's since released 18 albums that are considered a joke in the US, but still chart well in Germany for some reason. He even had a No. 1 single there in 1989 with Looking for Freedom. Then again, half of Germany was blocked off by the Berlin wall. They probably just didn't know any better.


7. The Olsen Twins

We're more willing to forgive this since they were kids and probably had no say in the matter. The Olsen Twins sang plenty of songs throughout their '90s video series The Adventures of Mary-Kate and Ashley. If you were under the age of 10, it was pretty much intolerable to listen to.


8. Lindsay Lohan

See Paris Hilton. There was a time when Lindsay was relevant and people actually wanted to see if she could make music. After singing on the Freaky Friday soundtrack, she recorded a couple of autotune-heavy albums. But unlike her child star contemporaries, Lindsay tried to prove she was a legit musician and sang live. Unfortunately, the results were disastrous.


9. Gwyneth Paltrow

We're not sure if Gwyneth's music career never took off in the US because she called Americans "uncivilized" compared to the Brits, or people genuinely just don't want to hear her sing. Her portrayal of a country singer in the movie Duets was universally panned and the singles she released fare no better. She's had better luck on the charts ever since latching on to the cast of Glee for several songs though.


10. Scarlett Johansson

Since Ryan Reynolds was once engaged to Alanis Morissette, maybe Scarlett thought she had to be a musician too in order to win him over. She contributed to the He's Just Not That Into You soundtrack and released two albums of her own, one of which was a collaboration with Pete Yorn. Let's just say Alanis has done a little better in the music department. Scarlett can have acting.


11. Hilary Duff

After singing for the Lizzie McGuire soundtrack, Hilary released three albums of her own between 2003-2007. They've sold millions of copies and two of them have even hit No. 1 on the charts, but music critics see her as the equivlent of the antichrist.


Who do you think is the worst actor turned singer?

Photos courtesy of Getty Images and Fame Flynet