Rex Pearson is an English musician who often posts guitar tutorial videos as well as his own music to his YouTube channel.
This lesson has a little twist, though; it takes place underwater on the edge of a reef in Thailand. It was only appropriate for Rex to choose the song, 'Under The Sea' from The Little Mermaid.
It's all part of his plan to encourage more people to get into music and play an instrument. "I thought if i could do something that even 'non' musicians would enjoy i might stand a chance and getting them into playing something," Pearson says in the above video.