Benjamin ingrosso, swedish singer.

Someone has seen it, lol. (Unless he filmed with nude underwear and they just blurred it to look like he was nude. They do this quite often on reality shows for the illusion)
It’s from a show in Madrid, I think, a few months back. I remember when it was on his Instagram story, he performed an unplanned anchor in nothing but a towel.
Judging by the stories from that day, he really had nothing on.