These videos give an example of how we'd treat your video.
Obviously this was a reference you provided, and it's the style of animation we'd create. Using green screen to composite imagery around and inside the band.
This video also demonstrates the intergration of characters within an environment. However with this video they're adding elements to a shot environment where we'll be creating this world for the Wombats to exist in.
However we'd also intergrate the band within this environment also. Like the Action Bronson does within this video,
Towards the end of this video MIA is duplicated and it's this sense of movement, within the video, Being able to move around her, through the scene we'd add to the Wombats video.