Board Thread:Music Packs/@comment-30919177-20161122192811/@comment-25376906-20161123184419

The .json file looks fine, if you want to expand it I suggest this page to check it: http://jsoneditoronline.org/

Have you put your .ogg file inside a folder named "lotrmusic" and this folder inside a folder named "assets"? The .zip file is then placed in the folder named "lotrmusic" in the .minecraft folder.

The last possibility is that your music is not on, check it in the MC menu. I had a similar problem and had to restart my PC before it finally worked.