Yes. They explain it right before it happens. They introduced a Very High Frequency (VHF) signal into the control signal that keeps the swarm ships from flying into each other. The ships need to communicate to coordinate and prevent each other from flying into each other. The VHF signal confused the guidance system and they started crashing into each other or exploding.
If you can play some sort of disruptive communication signal
inside the swarm it might somehow effect the capacity the way it coordinates.
It will have to be the frequency they will not anticipate.
It will cause a chain reaction that will wipe out the whole swarm.
They play an audio record as that signal.
It's pure technobabble that in no way would work in real life... Music is not VHF range, and VHF isn't really high frequency compared to other radio signals. Human Hearing and music is up to 20kHz, and VHF is 30 MHz to 300 MHz, about 1500 to 150000 times higher frequency. But consider that any number of signals are much higher frequencies, wifi is 2.4 GHz or 5 GHz. THF is Terahertz, Trillions of Hertz. It's an obsolete name for the frequency range, kept for legacy reasons. VHF would be a poor option to use as a "Very High Frequency" signal, and Audio even less so. They pandered to the lowest common denominator.