Any heavy music about elves - rock or metal, songs or dedicated bands who sing about elf stuff.
I'll start with Epidemia, russian rock band that sings about fantasy stories and their concerts incorporate costumes and scenes from fantasy books.
https://www.youtube.com/watch?v=E-MTdwZTb6Y

https://www.youtube.com/watch?v=80kk95-zZxI
https://www.youtube.com/watch?v=kKbevVKKer0