You wouldn't suspect that Devin Dawson's songs were all about heartache from the way he carried on at his BMI showcase appearance on Wednesday night. The Nashville singer, who released his major label debut, Dark Horse, in January was bubbling, whether he was detailing the origins of a song or bobbing along in unison with his band mates. But he was particularly excited to play "Prison," a crunchy, rocking number that saw his smooth croon get raw and raspy. "I used to be in a metal band, so I do love that shit – even if I blow my vocal chords out," he said afterwards. J.G.