I was listening to Lumsk this afternoon and it was all in Norwegian ! It didn't lose its' impression on me because I love their Nordic neo-folk sound and the beautiful singing !
Aside from opera, choral music and classical vocals, ( which I love to listen to also), what, if any foreign language music do you like ?
Also does the fact that you cannot understand the lyrics take away from its' appeal for you ? IMO it's still music !
Rammstein, Lacrimosa, Edith Piaf, Jacques Brel, King Sunny Ade and Aster Akewe are ones that come to mind.