I was completely befuddled by how folks were doing multi-camera multi-track remote audio AND video recordings (there must be a better word for this). So I made one myself to figure it all out. The music was written on the fly and almost every track was recorded in one take. This was less about a great tune and more about figuring out the workflow. The whole thing took about three hours from start to finish.
I recorded the audio in Garageband, filmed the video on my iPhone 7, mixed the audio down, and then did the video edit in Adobe Premiere Pro. I probably went a bit overboard with all the clicks and claps in the intro but it made the sync so much smoother. The hardest part was doing each track in one take.