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 . . .