Popular music is shrinking. From 2013 to 2018, the average song on the Billboard Hot 100 fell from 3 minutes and 50 seconds to about 3 minutes and 30 seconds. Six percent of hit songs were 2 minutes 30 seconds or shorter in 2018, up from just 1% five years before.
Stands to reason if artists are being paid per stream, long gone are the 10 or 15 minute tracks.
Read more: https://qz.com/1519823/is-spotify-making-songs-shorter/