Sometimes, just one song isn’t enough. Other times, a song is simply awful on its own. In these instances, the musical genius of the mashup comes to the rescue.

A mashup, for those who have probably never visited YouTube, is a song that is made up of the vocal and instrumental tracks of two or more separate songs. Not all songs can be “mashed up” in this fashion; it’s hard to find a perfect fit. However, when two songs click perfectly despite all odds, it’s pure entertainment gold.

In the spirit of mashups that fit perfectly and sound awesome, I have compiled a list of some of the best mashups to grace the internet.

1. Justin Bieber’s “Baby” vs. Slipknot’s “Psychosocial”

This is a prime example of two songs of questionable quality coming together to minimize their weaknesses. The result is dynamite. As we all know, Bieber’s voice is unbearable tripe and Slipknot’s instrumentals can lose their edge quickly. This mashup addresses both issues marvelously.

2. Bloc Party’s “Skeleton” vs. Fatboy Slim’s “Wonderful Night”

Perhaps one of the catchiest and most melodically pleasing musical creations I have personally heard, this mashup combines the intricate guitar riffs of “Skeleton” with Fatboy Slim’s relentlessly funky verses. This mashup is guaranteed to get your feet a-tappin’ and your head a-bobbin’.

3. Franz Ferdinand’s “Do You Wanna” vs. Run DMC’s “It’s Tricky” vs. The Knack’s “My Sharona”

“Do You Wanna” is groovy enough on its own, but the envelope is most assuredly pushed when Run DMC is added to the equation. With a little bit of the timeless hit “My Sharona” thrown in for good measure, this mashup is a surefire hit. All elements fit and a supremely enjoyable hybrid song is forged.

4. Beethoven’s 5th vs. Kanye West’s “Gold Digger”

I hate to give more attention to Kanye than he deserves (which is a lot less than he demands), but this mashup is just too good to ignore. The classical string section of Beethoven’s 5th brings a classy feel to Kanye’s rhymes, and both songs are kicked up a notch or two as a result.

Go forth and find your own favorite mashups, and tell us what gems you dig up in the comments below! Or, you could just go listen to Girl Talk, you hipster scum.