That old poem has about 80 stanzas to it.

5 seconds sound clip from the Desk Set (1957) movie soundboard.

You can hear this line at 01:33:04 in the Blu-ray version of the movie.

Quote context

[...]

- Cromwell will not come till sunset, and her lips grew strangely white... as she breathed the husky whisper, curfew must not a-ring tonight.

- What can I do?

- Nothing. You know you can't interrupt EMMARAC in the middle of a sequence.

- Quiet! Just listen.

- She had listened while the judges read, without a tear or sigh, at the ringing of the curfew, Basil Underwood must die.

- Uh, how long does this go on?

- That old poem has about 80 stanzas to it.

- Where are we now?

- She has reached the topmost ladder.

- O'er her hangs the great dark bell, awful is the gloom beneath her like the pathway down to hell.

- Lo, the ponderous tongue is swinging. 'Tis the hour of curfew now, and the sight has chilled her bosom, stopped her breath and paled her brow.

[...]