Chris Dalla Riva at Can’t Get Much Higher combs through music streaming data to determine a workable definition of a “one-hit wonder”:

After crunching these numbers, I think a resolution to The One-Hit Wonder Paradox begins to emerge. A one-hit wonder doesn’t need to actually have a hit in the traditional sense. It can help. But nobody needs to crack the top 40 to join the one-hit wonder hall of fame. You just need to meet a few criteria.

A fun read (and listen—it’s copiously linked to YouTube music videos).