Speaking as an old musician who has done audio/sound for 55+ years (and drone flyer)....any sound system you put on a drone would include a weight penalty
that would compromise flying ability... P3 and P4's can carry about 2-2.5 pounds maximum, but in order to hear a speaker over the prop noise would necessitate an
amplifier strong enough to put out at least 5 watts, and to power that, you would need batteries of strong capacity...add extra batteries, amplifier, speaker and
mounting hardware weight, and you would be at the point that it likely would be dangerous to fly. IMHO
