Nick. This works! Could you next perhaps look into making a template for songs and for albums and for years that would tell us something? The song template should perhaps display the album and year and the album template the songs
You might also explore (using the song-title field I think) how to handle songs that appear on multiple albums. I think you’ll find this is a nice extension of the work done on “songs” and “albums” which list all; so that you display content
when a song or album is clicked on.
Process: find a template tiddler, clone it, and go from there. Replicate the filter used in the list command by adding [is[current] to the front of the filter. Let us know how it goes