Ashford and Drummer are trapped and sing a song, a heavily modified version of " The Ballad of Captain Kidd". Kidd was tried and executed for piracy in 1701, and the ballad showed up in less than ten years.
When Melba leaves the airlock, she is wearing a "Savage Industries" space/mech suit. "Savage Industries" is run by Adam Savage. The logo is in the same typeface and style as that on Adam's merchandise. Adam also has also appeared in Caliban's War (2017) as a Mission Specialist.