[youtube http://www.youtube.com/watch?v=9m5IqttLgKk?wmode=transparent&autohide=1&egm=0&hd=1&iv_load_policy=3&modestbranding=1&rel=0&showinfo=0&showsearch=0&w=500&h=375] Tim Krekel was a Louisville, Ky., singer-songwriter who died in 2009. This slow, spare, mournful song, “The Angel’s Share,” suits my mood on this Sunday evening. (The angel’s share is the portion of the whiskey lost to evaporation…