Hyll - Dyn Sbwriel/Morforwyn (loved it, thanks Ben) which as we all know translates as Trash Man / Mermaid (thanks Google translate) so I give you Bobby Bare - The Mermaid Song
Bobby Bare - The Mermaid Song
Edit: Hadn't realised Suzi had already replied (I probably took ages scanning YouTube) so I'll leave my link here and let you choose to link to either, though I'm sure you'll find my song vastly superior