How is this surprising? Shazam tracks searches and location. If a lot of people search a specific song in a specific location, that means they 1) liked the song

How is this surprising? Shazam tracks searches and location. If a lot of people search a specific song in a specific location, that means they 1) liked the song, but it's new to them 2) the song is nevertheless played quite often. Both of these are good predictors for a viral hit. Because nobody uses Shazam on well-known songs, this filters out a lot of noise.