How many songs did they actually write? by Barcelona Supercomputing Center

How many times do we hear that "the songs from that artist sound all the same"? How similar are they, really? We applied automatic audio feature extraction and machine learning techniques to measure the similarity of songs written by the same artist, and the find out how many groups of songs are indistinguishable from each other. For bands like U2 it turns out that the answer is between 2 and 6 types of songs!