I read an article that discusses that one-word song titles are getting more famous than those titles with two or more words. 

Coincidence Scenario

Music has been changing from a short-long time ago. Now, most people like music that is "commercial" and what a coincidence that those song titles are made with one word. Lack of creativity/content/studies or not, they are on the top music charts.

Causation Scenario

Psychology! Almost everything in this world it is related to Psychology. Maybe one-word song titles are more attractive for the people or they can remember them more often and look for them after. This is how the titles creators get advantage from common people.

Believe it or not. I think that both scenarios can explain this new observation, but I think that the Coincidence Scenario will explain most of it. 

We need trustable surveys to get real results! Feel free to comment and/or make any correction.