It's no go.

When I googled "deas an oileain" alone, I got more hits. Here's a nice version, but unfortunately, when I play it, Soundcloud turns the MIDI off in my Noteworthy Composer.

I hate that!

But have a listen:

https://soundcloud.com/www-tradconnect-com/re-beauty-deas-an-oile-in-slow

Try sounding it out. It's in the key of D, the first note is D, it goes stepwise up to F#, drops to low A, goes stepwise back to D, then jumps to high D.   See if this doesn't get you going.