some artists are very involved with the creation of their videos. others couldn't care less, or don't have a vision and need to farm it off to a production company that comes up with ideas on its own, the labels sometimes step in and interfere, etc. maybe the band needed a video, comes across a film student who has a cool idea for a short, and says "sound good to me" - independent of the relationship between the music and the visual.
so i wonder how visually representative of the artist's vision the video truly is.