Unless you've been living under the biggest and heaviest rock ever, you are familiar with fun.'s huge smash, 'We Are Young.' With every hit song that surfaces, there are a countless number of covers making themselves at home on YouTube. Watch a mashup video of 43 different users giving their own take on 'We Are Young' below.

As our good friends at The FW point out, the compilation from MeTheOne.com strings together a variety of styles and instruments into one seamless clip. There are people using the traditional acoustic guitar, a ukelele, a violin, pianos and even a classy harp.

The video doesn't include all amateurs, as Christian rock band Satellites and Sirens give their own synth-heavy interpretation of 'We Are Young.' Kearney, Mo. singer-songwriter Patrick Lentz also makes an appearance during the fun. covers marathon. Unfortunately, there are a few duds that would probably look worse had they not been edited. Scroll down and tell us what you think.

The band will tour overseas next week, starting with an appearance at T in the Park July 8 in Scotland. They will finish out the rest of the month in the U.K. and Australia before coming back to the U.S. in Philadelphia, Penn. on August 2. See a full list of dates here.

Watch 43 Musicians Cover fun.'s 'We Are Young'