One of the most rewarding deep dives I’ve done on the blog was of David Bowie, back in 2016 a few months after his death. I didn’t cover all 25 of his studio albums, but I did get to the 15 with the most acclaim and/or notoriety.
Because I hadn’t yet joined the streaming revolution at the time, I wound up buying the Bowie albums I didn’t already own, and as a result they now form a decent sized chunk of my increasingly outdated iTunes collection.