Phil Groia focused on a truthful review of street corner music. Not only did he give actual locations, group names, pictures etc but he did not glamourize the events associated with the groups (often teens with problems). This book made me appreciate my collection even more and wonder what would it have been like had Street Corner Harmony (Doo Wopp Music) not been pushed aside by the "British Invasion". THEY ALL SANG ON THE CORNER is a must read book for all Doo Wopp aficionados and the curious.