Composer and performer Missy Mazzoli joins the panel to talk about Yuja Wang’s hemline, the WTC9/11 cover, tweeting at concerts, Spotify for fun and profit, grooving in her living room, and her work A Thousand Tongues for singing cellist. This week's panel: Patrick Gullo, David MacDonald, Sam Merciers, Nate Bliton, and Missy Mazzoli.