Lullaby

Hush, little baby, don’t say a word;
Papa’s gonna sing you a major third.
And if that third mis-tuned comes forth,
Papa’s gonna sing you a perfect fourth.

If that fourth is wider than reckoned,
Papa’s gonna sing you a minor second.
And if this song is strange I’ve crooned,
Papa’s whole octave needs re-tuned.

Admitted, that to rhyme forth with fourth is a bit of a clunker.

Separately: Although to my own knowledge (that non-definitive pool) Lunar Glare may possibly be the first piece for clarinet in A and harpsichord, of course the combination of bass clarinet and harpsichord goes back at least to Vic Muzzy’s characteristic music for The Addams Family.