Thumpalumpacus
Member
It's so dependent on the band, the player, the studio, the producer, the song. Also, artists are not always reliable sources of information about their own creative process (i.e. when two band members have different accounts of how a song was created).
Right, the best way to tell is to listen to different iterations of the song and get a grasp on the band's commitment to note-for-note versus improvisation ... and yes, it's a continuum.
