Multiple iTunes Libraries on multiple harddrives will not convert over to Mac Music

OK - looks like I solved my own problem.

I said that every external library had the same name "Music Library.musiclibrary" and even though I thought I had done this before, I tried inserting a small code which identified the genre of the library, in this case "classjazz", immediately after the first words Music Library and before the dot.

Closed everything and reopened as usual with Option/click and chose that library on the external disk. This time selecting the Music Libraryclassjazz etc. opened up the correct library.

I think the last time I tried adding a name I had replaced the first words "Music Library" with my new title. That did not work.

So I went back over all my other external libraries adding code letters and each one now opens. I even added "iMac" to the original library on my computer.

Also, I quickly tried to sync one with an iPod and now that works too.

Maybe this will help someone else. Although I don't know many people who have more than one musiclibrary.

My point is - I am doing everything you suggested. I option/click on the Music icon in the dock and select choose library. Then I make my way along the path to the library I want to open. The name of that library will always be "MusicLibrary.musiclibrary" no matter which one I have chosen and no matter where it may be located. But --- when I click on it what opens is NOT that library I created in that location but the one in the iMac Music folder. All the time. This was never a problem with iTunes.

I figure it has to be something I am doing or did. I created each external library by opening the iTunes library with Music and each seemed to convert seamlessly including covers. But--- when I return to open newly created library it always reverts back to the first library I created - the one on my iMac. I still wonder if the fact that all Music libraries are named identically has something to do with it.