honestmp, just about five minutes ago, I did a restore back to Mojave. I'am done dealing with all the headaches, and countless hours pulling my hair out, finding missing tracks, importing artwork, inputing titles, making it all correct, that over the years with 772,000 plus audio tracks, 55,000 albums plus and rising, and 500 plus full length movies and shows... this is ridiculous that some oddballs would even change the format just to improve their bottom line. Mind boggling. iTunes is a great tool, but not broken apart as it is now in Catalina format. It was taking forever for the their retrieving of the artwork album covers, and did notice that what I uploaded the day before in Mojave, some albums were missing all together even though the album came up on the new iTunes when of course that "!" of death appeared.... Over the years I have input most of the album covers by searching the net and sliding them over. Sure Apple found most when I added albums, but can you imagine all of the years and time taken, I am shaking my head... why why? I do sometimes just sit back and ask myself why am I taking all this time over maintaining this very large library of music that dates back to the early 1900's? It's because I believe for me, music has always been a part of my life? It's because I enjoy all kinds of music. I grew up on country music, my dad was in a band called "Gary Hines and The Country Boys" and we traveled the country music fairground circuits with big stars such Tammy Wynette, Dolly Parton/Porter Wagner, Lauretta Lynn, ect. then my grandmother had these old albums that I started to listen to such as, Count Basie, The Mills Brothers, Duke Ellington, Ella Fitzgerald, Sarah Vaughan, Doris Day, etc... then later I fell into loving Limousines which I was carting around celebs such MC Hammer, Mi'Chelle, Seduction, Wild Cherry, Rosemary Clooney, Michael Jackson, Tiffany, etc... All this sounds of all the genres just fill me up with all kinds of emotions, joy, you know.... they say music is an international language which I can vouch for that...
Couple years ago I was an android phone user. For Christmas, someone had bought me an Apple Watch, I was so excited that I wanted to pair it up and try it out. At the time I received the watch, you could pair an Apple Watch to an apple iPhone. Damit, wouldn't you know it, I had to purchase an iPhone just to use the Apple Watch.
There is so much wrong where apple is not keeping with their customers. Been an iTunes user since it started. I too have a Mac mini first generation, and I think sometimes it's faster then my 27" Mac. LOL. I also use PC's Both Microsoft and Apple have their faults, but if I had to choose, Apple is becoming the worst of them.
Over the years I have tested out other ways of maintaining a music library. There really is no match for what iTunes (before Catalina) does. Sure, the new version which is probably great for new users, but for us oldies, no way. Tired of all the take aways, screw ups. I lost 9,000 plus songs back when Apple did their music take away which they were never accountable. It was like oh well, move on. Songs disappeared from albums, and whole albums disappeared....
I am back up and running on Mojave again, and have found a somewhat stable program CleanMyMac which kind of is keeping an eye on everything. I am not loosing my library again over some flawed ways of Apple. Hang in there!