Thanks, Mark, you have good ears for identifying instruments. It helped me decipher a lot of what’s going on in Black Skinhead. For some reason, the yellow comments disappeared from your graph, but I’ll try searching the web to get more info about the effects that were used. Let’s focus on the structure thing that raises the most questions: does a rap chorus obey different rules than usual?
I agree with your Intro Beat, Intro Vox, Re-Intro, Vox Break and Outro, but your Bridges 2, 3 and 4 correspond to what is usually described as a chorus. Or if you prefer, the leitmotiv and loudest part of the song:
Granted, it’s risky to rely on one’s eyes too much. But that’s one of the few occasions when looking at the waveform seems to help. And each time, the chorus corresponds to the recurring lyrics “Four in the morning (...) And you know it”.
The same Black Skinhead waveform with the structure you chose shows things that feel weird to me, like a bridge which would be louder than the chorus:
Now, this song is very special, so maybe they broke the rules here too. And I can see how the recurring scratch guitar led you to decide that it felt like a chorus. What bothers me though is that the lyrics are significantly different between each of your choruses. But hey, the Dafts don’t care much about lyrics. When doing the structure graph for Kavinsky’s Nightcall (produced by Guy-Man), I realized that verse 1 and 2 had exactly the same lyrics, in addition to the chorus lyrics remaining the same. Not to mention “Around the world... Around the world... Around the world...”