13: Sam Petty and the Helix Breakers

Explanation
The original song was the classic annoying travel song "99 Bottles of Beer on the Wall". The author changed it to a parody of "Freefallin'" as a pun on the name of the comic. The Asimov, named after science fiction author Isaac Asimov, is the name of the sleeper ship she was supposed to have ridden on all the way to her intended destination, while Jean is the name of the planet she found herself on, instead.

The author writes:
Just getting the obvious joke out of the way... while obscuring it just a bit.

Original Freefall strip: #37.

Transcript
{Sam is driving 'Pop' Rivet's truck, with Florence and Helix as passengers.} Florence: Mozart? Chopin? Helix: That's not traveling music! Florence: Wolftones? Headbreak? The Gories? Helix: Bleah. No! Sam: Put your disks away, Florence. We'll get some real music going. Sam & Helix: (singing) She's a good girl, loves her mama, loves Asimov and Planet Jean too! Florence: (thinking) This is going to be a very long trip.

Future References

 * Nos. 14 and 23 were inspired by this strip; in them, Sam and Helix sing "Winter Wrap-Up" and "Paradise City", respectively.