Ozzy Osbourne performs at the 25th-anniversary Rock and Roll Hall of Fame Concert at Madison Square Garden. Stephen Lovekin/Getty Images Entertainment hide caption

itoggle caption Stephen Lovekin/Getty Images Entertainment

April Smith and the Great Picture Show's "Colors" is at least as much a ballad of heartfelt yearning as it is a stomp-and-swagger jam. Eric Ryan Anderson hide caption

itoggle caption Eric Ryan Anderson
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Mumford and Sons' rich harmonies and infectious melodies bring to mind Crosby, Stills and Nash. courtesy of the artist hide caption

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As a solo singer, Tillman releases a hushed and respectful hymn for a modern age. courtesy of the artist hide caption

itoggle caption courtesy of the artist

Midlake Bil Zelman hide caption

itoggle caption Bil Zelman