Much Ado About Fuji Master Pasuma Wearing Headphone To A Club

To my best of knowledge, headphones are used in listening to music, in order not to cause nuisance to others around you AND if needed in the club, it is only for the DJ. So why is our Fuji master, Pasuma wearing his headphone to a club?. Or was he going to DJ one of his songs in the club?...Lol. Photos below..