Howlin' Wolf has filed a lawsuit against StubHub. The music venue in New Orleans is pursuing a case. It centers on speculative ticket sales. Tickets were sold on StubHub before the venue approved them. StubHub operates as a online ticket resale marketplace. Speculative sales occur when sellers list tickets they have not acquired. Howlin' Wolf says this happened without authorization. No more details have so far been given. The lawsuit aims at this kind of early listing. StubHub allows resales, but this case questions the timing of listings.