Will Hermes reviews "Return of the Grievous Angel." The recording is a tribute to the singer and songwriter Gram Parsons, who was the spark behind the melding of rock and country music. His partner for many of the recordings he made was Emmylou Harris. On this tribute recording, Emmylou has helped put together artists Cowboy Junkies, Gillian Welch, Elvis Costello and Beck among others. Hermes thinks its the best look back at a great American songwriter.