Note: This is a three-song excerpt from the Broken Bells set at SXSW. Hear the full show at npr.org/sxsw. The Shins' James Mercer and the highly sought-after producer Danger Mouse just released their debut album as Broken Bells. Making one of its first-ever live appearances, the band appears on NPR Music's South By Southwest showcase at Stubb's in Austin, Texas, on March 17, 2010.