I discovered several songs by the group Blackmoore's Night. They transposed well into LOTRO ABC (not by me, I do not take any credit). I think they sound great. I placed a zipped folder called Blackmoores Night in the gallery section. Check them out. There are Solo, 5, 6,7 and 8 part songs in that folder.
Here is a snippet of their Bio:
Blackmore's Night is a British/American traditional folk rock duo formed in 1997, consisting of Ritchie Blackmore and Candice Night. To date they have released nine studio albums; their latest, Dancer & the Moon, was released on June 11, 2013
The group performs at Renaissance fairs and Renaissance Festivals, as well as in stand-alone concert tours in appropriate venues including 'castle tours' of Europe, where they perform in historic surroundings for an audience dressed largely in period costume.