Rock bands covering music in a different genre can sometimes be a sensitive subject. You have people that love both genres separately but then there are fans who prefer their music to be a bit blended.

Punk Goes... is a series of compilation albums that feature punk rock artists covering music from different genres and times. Jay-z and Linkin Park's mash-up album Collision Course made "Encore" and "Numb" sound brilliant together.

YouTube gives many indie screamo artists an outlet to share the songs they've covered of hip-hop and pop artists. It's an acquired taste but we think the results are kind of cool and we can't help but giggle at how the some of the lyrics sound this way. Here are 12 of some of the best hip-hop and pop song covers.

Goodnight Nurse - "Milkshake" Kelis' Grammy-nominated 2003 hit song still translates as sexy by Goodnight Nurse.

Throwdown - "Baby Got Back" Sir-Mix-a-Lot's number one single from 1992 receives an awesome hardcore twist.

The Devil Wears Prada - "Still Fly" The Big Tymers gets their stuntastic single from their Hood Rich album covered by Devil Wears Prada on the Punk Goes Crunk compilation album.

The Pen and The Pendulum - "No Hands" Waka Flocka, Roscoe Dash and Wale's stripper anthem gets a screamo cover by The Pen and The Pendulum.

Amyst - "Rolling in the Deep" Adele's single "Rolling in the Deep" has sold over 5 million copies in the US alone. It has also been the longest running number one single of 2011. With so many different remixes of the hit song, what's not to love about the heavy metal version?