Much better discussion here: https://www.musicianwave.com/whats-the-average-length-of-a-song-year/ https://www.musicianwave.com/whats-the-average-length-of-a-s

Much better discussion here: https://www.musicianwave.com/whats-the-average-length-of-a-song-year/ https://www.musicianwave.com/whats-the-average-length-of-a-s... > "The 45 rpm record came into the scene in 1949 and replaced the 78 rpm record. This fact alone isn’t very relevant to the average length of a song, as both formats could hold “around” 3 minutes of music. However, the continuing popularity of the 45 rpm record may help to explain why hits under 4 minutes are still the norm today."