[Mikumo actually looks momentarily a little surprised at the effectiveness, though it turns into something a bit more like impressed a moment later. Which is also quite rare for her, in all honesty.]

I'd go so far as to say it was quite good. [They're both just piling on the praise words here, aren't they. Since she's closer to the ground anyway, she takes the opportunity to spray the point they need while she's down here.]

Sonic weapons aren't in much use in my time - though music tends to have more power than one might think - but that's what I would have expected from one.

["Changing the frequency" makes more sense to her now that she's seen it in action.]