Grishka: You're right; I didn't read to the end. But now, having read (and listened) to the end, I still don't understand: what does he mean by "an absolute B"?

Also, listening to the recording (See Mr. Happy's link above) cleared up one more problem: I now see that what appears to be lines 5 and 6 of verse 1 is actually the chorus. (It's nice to have choruses marked as such.) I see that in the original, the chorus was indicated by an indentation, but the indentation apparently didn't survive Robyn's copy-and-paste.

The recorded version also has a few differences:

E is for 'eye', an optical disk,
F is for 'F', with three asterisks.
...
Z's for the birds, if you ask me.