Creating a complete and engaging live musical experience is a tough feat. Having only about forty minutes of material to draw from greatly complicates the situation. “Would it be wrong?” Not for Broken Bells.  For Broken Bells, also known as Brian Burton (typically known by his alias Danger Mouse) and James Mercer (lead singer of The Shins), this was effortless.  Broken Bells have built upon their musical efforts on their self-titled Broken Bells at the Troubadour in Los Angeles this past Sunday 3/14 with a lively, entertaining and thoroughly enjoyable performance.  As their final show on their mini-tour which included London, Paris, and New York (next they’re headed to SXSW), Broken Bells have put on a moving and memorable performance that highlights the creative possibilities of this so-called supergroup formed during the collaborative work by Burton and David Lynch (which …