My laptop just downloaded a new iTunes. Over several years I have purchased over 350 songs. They are on my IPhone 11 but not my computer. Why? I had to sync the songs to my phone originally - them my iTunes wouldn’t open for years.
Remote Desktop
If they were songs you purchased, you can redownload them. See the "How to redownload music on iTunes for Windows" section in:
Redownload apps, music, movies, TV shows, and books - Apple Support
Or, if you still have your old computer, you can transfer your iTunes library to your new computer:
Move your iTunes library to a new computer - Apple Community
Back up and restore your iTunes library on your PC - Apple Support
If you simply can't find your existing library, you can try this:
Use multiple iTunes libraries on PC - Apple Support
If they were songs you purchased, you can redownload them. See the "How to redownload music on iTunes for Windows" section in:
Redownload apps, music, movies, TV shows, and books - Apple Support
Or, if you still have your old computer, you can transfer your iTunes library to your new computer:
Move your iTunes library to a new computer - Apple Community
Back up and restore your iTunes library on your PC - Apple Support
If you simply can't find your existing library, you can try this:
Use multiple iTunes libraries on PC - Apple Support
Laptop - where is all my music
