Music Video Research (Earth, Wind & Fire - September)

Artist: Earth, Wind & Fire
Song: September
Camera/Editing:
There is an instant noticeable effect that takes place in the background, the multitude of the members, almost like they're in a room full of mirrors, it may have been used to make the video stand out from just being a regular performance. Furthermore, the amount of colour directly correlates to Funk as a music genre as it supposed to be full of joy, and rather than just being the band, the mirror effect creates emphasis for the amount of joy. We aren't shown a variety shots, just simply switching from band members playing their instrument or dancing around, although there is a general focus on lead singer (Maurice White) 
Narrative:
There is no story what so ever as it is exclusively a performance. Even the lyric to bring about the song "21st night of September" has no meaning has been stated by White as it just feeling right.
Conventional/Unconventional:
It stays conventional with it being a performance in it's entirety, the clothing could be considered conventional for it's time period however, it also can be considered unconventional with the constant ripple effect in the background throughout.
What works/What doesn't:
The use of performance is simple but can be used effectively like in this video as it basic and fits the song in general, further putting emphasis on the background for people to focus on.