Michael Tauberg, writing on Medium:

With the death of record stores, radio, and to a lesser extent, iTunes, the unit of music delivered to customers has shrunk. From the album, to the song, to now, the stream, music has been disentangled from it’s larger context. As such, we would expect that the names of albums and songs are uncorrelated to their musical success. One way to measure this is the number of unique words in a song title. Although there does appear to be an art to naming a hit song (or say book), the longer tail of music means more random song titles chosen by artists instead of record executives.

An interesting dive into music data.