If I were to somehow get ahold of a copy of Rhythm Doctor and modded in a new chapter of custom levels, these are the songs that I would consider using:
LH-1: Everything Black by Unlike Pluto
Rivulet Otter - Prolonged exposure to subzero temperatures has afflicted this slug-cat hybrid patient with chronic bouts of offbeat arrhythmia.
LH-2: For Me by Throttle
Analdis - N/A
LH-2N: Final Hope from ADOFAI
Analdis - Complications suffered as a result of previous tachycardial treatments have amplified the patient’s heartbeat to a dangerously high rate.
LH-3: Peer Gynt by cYsmix
Monk, Artificer - N/A
LH-X: No Hints Here! [EX] from ADOFAI
Rivulet Otter - An unexpected uptick in the patient’s beat rate has been detected. The patient had already been discharged and could not be contacted, leaving them at an elevated risk for cardiac arrest.
LH-XN: No Hints Here! [Original] from ADOFAI
Rivulet Otter - same description as day shift
The act ends with Rivulet catching the virus from somewhere in Middlesea, being discharged without it being detected, and returning to their globetrotting activities. Still, Rivulet’s metabolism isn’t very strong, so the virus wouldn’t be as much of a problem to them as the slugcats they’re spreading it to. I'm not very good at writing these descriptions . . .
Because my Steam account is under Family View, I don’t have access to the Steam Workshop in the first place. From what I remember of the news log, the artist restrictions only apply to levels uploaded to the Steam Workshop.
Besides, even if the rules still apply to levels that aren’t published on Steam Workshop, I’m sure that I could find a way to pry them out of the files and broadcast them over RW-570.