"Hū ka nahenahe!"

Translation: Oh how melodious!

[RonRGB]

(link) https://manomano.io/definition/26430

nahenahe

[PE] 1 vsSoft, sweet, melodious, as music or a gentle voice; soft, as fine cloth; softly blowing, as a gentle breeze; gentle-mannered, soft-spoken, suave. [PPN ngasengase]

[JamesTWils]

So I assume this would not be limited to music.

[rabelon]

I think you are correct.

[Kamakea1]

Nice vocal expression.

[scarvbarv]

Is there a difference between hū and aue?

[rabelon]

Yes.

[scarvbarv]

Would this same phrasing work with other adjectives? Example:

Hū, ke kiuke!

[rabelon]

Yes.