Mp3tag 4+

iCloud looks at the metadata in each music file, which can be incorrect in my peersonal music from my CD colleection. Search looks at the metadata. Mp3Tag is great for fixing the metadata, as changing the file name isn't enough.
The app pulls in data for the tracks from Discogs or other sources which is cool. It is challenging to determine what set of data fit my tracks as the choices are not well defined. Hit the back arrow and select another option until one seems to fit. I don't think there is an 'undo' once you commit to the changes. The options the app finds are often ambiguous so it's a bit of a challenge to get the right metadata for my older CDs, which is due to the external sources.
It would be nice to have a universal search and replace for multiple tracks, as if I want to change BTVN back to Beethoven for multiple track titles. The CD title is easy to change for the whole CD but not ind track titles.
The composer field is also difficult. I use lastname, first name and dates as in (born-deceased), but the app doesn't provide composer information in a consistant fashion. A dropdown with options would be a good feature to add.

I highly recommend this app. If you are on the fence like I was, I'll get into that below. But first, the reasons why I now use this app daily. I'm a Deejay and its an ongoing process to develop a low-maintenance system for organizing a large and diverse collection, and most importantly, one that maximizes creativity and minimized management. This app was the missing piece, and fits perfectly into my flow. Particularly since I still buy vinyl, but rip it so I can listen to it when I'm not at my turntables.

Now if you are on the fence like I was, when I first downloaded the trial, here's what I would say. By just opening and clicking around the app, without digging into the documentation, I had a very surface level understaing of how deep this program was. I had the assumption that it lacked most of the features I wanted, like advanced batch editing, broad tag support, appending, substring replace, regex, etc. But there is little to no functionality that I have found missing so far now that I have spent some time learning the app. It can even be scripted.

I docked this one star only because I find some of the UI to be un-intuitive and take notes to remind myself how to do certain tasks. But that is not a reason to not buy this app if you need fine-grained control over tags in a large library.

That's right, while the MacOS version is new, I've been using MP3TAG for at least two decades. And it has always, always, always been the best. I'm a working DJ, and I obsess over the formatting of the names of my music files and keeping TAG info correct. There is no better app than this for a music library, I have searched every few months for about eight years now to see if it had been released for Mac. i'm such a dork, you wouldn't believe my excitement when I saw it finally has come to MacOS--and in true Florian form, it comes at a GREAT price so it's accessible for all (he did the WIndows version free for years with just askiing for donations...which I did several times). The UI is his classic interface that I've been using for years, it is remarkably fast (even with granting permissions), it is easy, it just works and works GREAT. Florian is a very accomplished app designer and developer. You will not go wroong with this utility. Thank you Florian for your years of dedication and Congratulations on your success on the Appstore. #10 in Music?! Whoot Whoot!