Absolutely right about Shape Water, [@Hekazu]. I was definitely jumping the gun. Thanks for the clarification.

Just had an idea, before posting.

Now, if Torus attempts to boost morale alongside Parum's music, could we roll a Persuasion/Performance check to "HELP" the NPCs with their Attack? 

Unsure what they would gain since we have advantage from Faerie Fire. Maybe NPCs gain advantage against Frightful Presence or + 5 to hit. DC your choosing, perhaps.

Thinking outside the box is all, especially with the fittest remaining.