Errortype:11 (also known as Errortype:Eleven or ET11) was an American punk/indie band formed in New York City. Members were Arthur (Arty) Shepherd (guitar, vocals), Phil Hanratty (guitar, vocals), Adam Marino, Scott Martin (bass), Erik Matheu, Keith Moore, Leroy Getaway, Sammy Siegler, Ti Kreck, Steve Sanderson (drums).