Oh artists. You can get away with anything, can't you? You can tell a woman to give a microphone oral sex in a performance you call a "sonic piece" or whatever other euphemism for BJ you want to use, and she'll do it. Three times for three videos, one with an audience. (The below vids are definitely suggestive and probs NSFW)

Not sure who the woman is, but the artist responsible for the video trilogy simply titled 'Blow Job' on the 'Tube is Wojiech Kosma, who's known for creating "speculative aesthetic interventions in public and gallery spaces". Like I said earlier, whatever you want to call it!