Put your horn jokes aside, this one deserves your full attention.
YouTuber FhornPatrick is a bit of a horn-y genius, and has covered everything from the Game of Thrones theme song to this awesome version of Outkast's 'Hey Ya', which will most definitely now be stuck in your head for the rest of the day. Or the '*clap, clap, clap*' bit will at least.
Via YouTube