LaHimore,
In addition to using the Filter Field, as TT2 suggested, I'm also using View/Sort By and View/View Options:
Fine-tune your Library search using View Options
You can select your own header columns for detailed searching in Music. This is especially useful searching within a playlist - for example, if you use Voice Memos and have them in a playlist. Here’s what I do: First, click on a section in your Library - Artists, Albums, Songs, Genres, or Composers, then in the top menu bar, click on View/View Options. This opens the View Options menu. In the top section of the menu, select View As: Songs, and Sort By: Titles.
Next, in the lower section of the menu, select items you want in your header, such as Album, Artist, Comments, Time. The Title column will automatically be there if you’ve selected it in “Sort By”.
You can further customize your headers by scrolling down to view all the options. For example, you can click on “Love” to add a column for favorites you’ve noted with a ❤️.
In my experience, once I’ve set-up custom headers using View Options, for my Songs library and particular playlists, they remain set.
Note: I don’t know if View Options will show for Music Videos or TV & Movies because I don’t have these items. If you do, try it out.
Using View Options and Filter Fields Together
Once you’ve customized your header with View Options, if you want to narrow your search within that specific listing or playlist, then use the Filter Field (Option/Command/F). The Filter Field search bar will appear in the upper right corner. Just type in your keyword(s), and it will automatically search within the listing or playlist you have open.
Moving/Reorganizing Items within a Playlist & Adjusting the Spacing of Header Columns
If you want to move or re-order items within a playlist and adjust spacing between header columns, the good news is that using View Options, as described above, restores the ability to do so.
I’m still trying out the possibilities… just sharing what I’ve discovered so far. By the way, I'm on Big Sur 11.2.2 and aware things may appear differently on other OS versions. If you have any questions about what I've written, I'll offer what I can... fyi, I'm not an expert, just relieved and grateful to discover these much needed tricks for restoring my usual way of searching in iTunes - now Music.
Best Wishes,
Lori