In MetroStage's 'Shake Loose,' nothing's left unsung

A musical roller-coaster ride through the African American experience is a journey well worth taking at MetroStage, thanks to four gifted vocalists, five skilled jazz musicians and a good idea.From the Great Migration northward to the civil rights and anti-Vietnam War eras to the unique stresses of being black and a celebrity, "Shake Loose: A Musical Night of Blues, Moods & Icons" takes on a lot and handles most of it with panache.