Taking Chopa as an example, in the Discography section the album information for each of their 3 albums is pretty much the same thing that can be found on each individual album's page.  The albums are already linked to.  So what I am suggesting is removing what is duplicative and migrating anything that does not appear for each individual album onto that respective album's article page.  In the end, you would be left with a Discography section listing all 3 albums.

I also noticed the Notes on selected pieces section; this section be taken out of the Chopa article and appear in the pages for all 3 albums containing only those notes relevant for that particular album.  As it appears right now, the reader cannot tell where a song appears unless he/she scrolls up and searches.  It would be more relevant to have the specific information pertaining to songs appearing on particular albums on the respective album's pages.