Music Quiz 4

This time, two “frightened” songs are wanted:

In which songs of which artists is the first-person narrator concerned or frightened about
a) 17
b) 43
things/situations/circumstances etc.?

(Hope I didn’t miscount them…)

If needed, hints will follow.

1st hint after 4½ hours:
The artists of a) are more basically exclusively known for their comedy (not just comedy songs, that is); b) is a solo song of an artist who’s much more popular as part of a band (a band that I’ve mentioned before multiple times on this blog)…

The solution, found by juliaL49, though not without search engine help…:

a) is “I’m So Worried” by Monty Python with 17 different reasons to worry (and some are repeated) such as “I’m worried about the baggage retrieval system they’ve got at Heathrow”.

b) is “I’m Scared” by Brian May, who packs 43 fears into 34 lines from “I’m scared to move, I’m scared of standing still” to “I’m scared it may all be for nothing”.