Just wanted to point out how awesome Tom Lehrer (wikipedia) is as a musician/satirist/teacher as well as just a decent human – he relinquished all copyright ownership over his music catalog and currently* has his songs, sheet music and lyrics available for free download at https://tomlehrersongs.com/.

Here’s the link to Wernher Von Braun where the parent lyrics come from.

*At the bottom of the homepage is the note:

NOTICE:
THIS WEBSITE WILL BE SHUT DOWN AT SOME DATE IN THE NOT TOO DISTANT FUTURE, SO IF YOU WANT TO DOWNLOAD ANYTHING, DON’T WAIT TOO LONG.

Principiis obsta et respice finem — ‘Resist the beginnings’ and ‘Consider the end.’