Guys Do Mariah One Better

Mariah Carey's hit single turned 20 years old last month--and never goes out of style during the holiday season (or year round?), but now we get something really special.

Out of the Blue, Oxford's all-male a cappella group, filmed their video and rendition of the classic entirely on the Oxford campus. And it's a certifiable YouTube hit with over a million views so far.

The single is available for download here. The group put together the arrangement and video to promote the Helen & Douglas House charity, which provides support for families requiring children hospice care in the U.K.