Joshua Leeds Eustis is an American musician, singer-songwriter, and record producer, best known as the current sole member of the electronic music act Telefon Tel Aviv, since the death of bandmate Charles Cooper in 2009. He served as a touring member for the industrial rock band Nine Inch Nails in 2013, and he has collaborated heavily over the years with Maynard James Keenan's project Puscifer, for which he also served as a touring member. Eustis' solo project is Sons of Magdalene, launched in 2008. He is also a founding member of the band the Black Queen.