I have turned these following folk songs into ABC format for use in LOTRO:

Boneys Lamentation
Bonnie Dundee
Boulavog
Chevy Chace
Flowers of the Heath
Men of Harlech
Over the Hills and Far Away
The Gallant Hussar
The Mermaid
The Minstrel Boy

They are all three part pieces with the exception of The Minstrel Boy which is a two part song.

Link: https://theramblingroses.uk/media.php

That's my band's page "The Rambling Roses" - you can also watch a few videos there of songs I have made using Maestro.

Cheers!