They show it to us in movies.

On the subject of music and frequency, we know that the black goo is affected by frequency (as we also saw in the movie Venom and with the people who died at the Astroworld rock concert).

With frequencies and quantum computers, they will be able to remotely control people - physically, not just mentally. The clip from "Ghostbusters" (Ghostbusters has many references, including the goo), is reminiscent of the scene in "Ghostbusters 2" (made decades later) in which the demon makes everyone dance and can control them all.