Song Modality: Cover Songs

Is there a noteworthy difference between songs written by members of the band and songs written by others but recorded by The Beatles?

Tall lines (left) indicate high song modality score (emphasis on using very common words). Short lines (right) indicate low song modality score (emphasis on using rare words). Blue lines indicate songs written by The Beatles; red lines indicate cover songs.

Analysis

There is a roughly even distribution of cover songs across the spectrum, but it is not entirely even. The most significant effect is that the seventeen songs with the highest scores are all written by members of The Beatles. By cross-referencing this with the song modality score table and the bar graph of chart songs, we find that this includes the hits "P.S. I Love You", "Love Me Do", "She Loves You", and "All You Need Is Love".