Music files not showing

I am running an iMac Late 2015 with High Sierra.

My iTunes library cannot find most of my music. I looked in the iTunes Library and it is not there. I tried linking to a previous library and it is not there. I opened Finder and typed in a name for a missing song. When looking at the info, the song shows that it is in iTunes media->Music->"Band Name"->"Album Name. I can play the song from the Preview in the info folder. However, when I go to finder and follow the path to iTunes media->Music the band is not there and most of the others are not there as well. I have looked for hidden files and while I can see hidden files, the music is not there either. Any help is appreciated.