Send MIDI to electrical switch

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Sup diy. I'm a circuity retard, go easy on me.

I've had a stupid kid's toy for the longest time and it was just collecting dust in my basement. It's a series of four lights connected to a controller box, and when powered on, one light is lit up at a given time. The controller box has a microphone that will progress which light is lit up based on the sound it hears (bass notes / kicks / etc). After taking a pair of wire cutters to the mic wire and touching the wires together (without the microphone sensor in the line), upon releasing the wires from contact, the lights progressed.
I'm wondering if there's a way to send MIDI notes to a channel and have it act as a switch for that wire, so each note sent to it will progress the lights by one step. Obviously USB to MIDI out interfaces already exist, so I'd like to know how to use one of those (or something like it) to achieve that result.