Purchased music not showing

So this is driving me crazy ... my iTunes has a lot of music - much of it purchased from Apple. iMac 10.14.6 iTunes 12.9.5.5.

Yesterday an external drive (which has nothing to do with my iTunes) crashed. Now I'm finding that a lot (not all) of my purchased tracks are not showing up in my iTunes.

There's an (!) marker next to the tracks. I can see them in the list when I look at my Purchased music. But they've disappeared from my iTunes Music folder.

I thought it should be easy to download them again but I was mistaken ... the download option is not offered when I go to my iTunes account.

I have one Instrumental Hits album with around 100 tracks that I purchased from Apple. To restore my tracks I have to double click the track and get the error asking me to Locate the track. I have to cancel that and then the download icon appears against that track. Clicking on the download icon gets the track back into my iMac/iTunes.

This cannot be done with the entire album ... it has to be track by track. That's just crazy!

Isn't there an easier way to get my purchased music back?