D&D 5E A word that describes the magic of the bard?

[TheSword]

I would suggest Choramancy.

It references several words, chord, chorus, corda (a string in latin), chora (Greek for town as Bard is an urban class).

You could adjust it to be Chordamancy, Or Chorumancy.

Or if you want to go down another route… Audiomancy could be magic of sound.

 

[le Redoutable]

so, if I follow my Intuition, Bards are Opposite ( or complementary ) to Hunters ( I refer to Mm and mM )