Song lyrics have become simpler and more repetitive over the last five decades

• https://www.nature.com/articles/s41598-024-55742-x
• Emilia Parada-Cabaleiro, Maximilian Mayerl, Stefan Brandl, Marcin Skowron, Markus Schedl, Elisabeth Lex & Eva Zangerle

Song, Lyrics, Music evolution

(haven’t read) is the sampling equivalent across time?