Great music and music talk at TEDxSomerville at the Armory yesterday! Michael J. Epstein was the house band and acted as Paul Shaffer to C. Todd's David Letterman. Marcus Santos rocked the place to the rafters. Echo Nest founder Brian Whitman blew minds with his new music distribution paradigm. Jenee Halstead serenaded with a glorious voice. Keith Whitman played live freely improvised electronic music.