Started in 2011, Jon Mueller's Death Blues is a multi-media performance project taking on the idea of death, the idea that our lives are finite, and using those realizations "as impetus to become more present in each moment." Before its finale, "Ensemble," hits the Pitman Theatre stage Saturday night, I had a chat with Mueller about the project's origins, records, the state of music - and those who consume it - and life after Death Blues.