Dave's Picks Volume 9 features a 1974 Grateful Dead concert played in Montana. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

In their new documentary Finding Vivian Maier, John Maloof and Charlie Siskel profile a reclusive photographer and her undiscovered photo archive. Vivian Maier/Courtesy of IFC Films hide caption

itoggle caption Vivian Maier/Courtesy of IFC Films

New Gods is Scottish songwriter Dan Willson's second album as Withered Hand. Laura Lewis/Courtesy of the artist hide caption

itoggle caption Laura Lewis/Courtesy of the artist

Bud Powell pioneered bebop-style improvisation on the piano. Metronome/Getty Images hide caption

itoggle caption Metronome/Getty Images

Sara Evans. Robert Ascroft/Courtesy of the artist hide caption

itoggle caption Robert Ascroft/Courtesy of the artist

Angel Olsen. Zia Anger/Courtesy of the artist hide caption

itoggle caption Zia Anger/Courtesy of the artist

Pharrell, sporting more conventional headwear. Mimi Valdés/Courtesy of the artist hide caption

itoggle caption Mimi Valdés/Courtesy of the artist

Chuck Mead. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Benmont Tench has a reputation in rock as the guy you want playing on your album. You Should Be So Lucky is his solo debut. Sam Jones/Courtesy of the artist hide caption

itoggle caption Sam Jones/Courtesy of the artist

Eric Dolphy in Copenhagen, 1961. JP Jazz Archive/Redferns hide caption

itoggle caption JP Jazz Archive/Redferns

James Brandon Lewis' second album, Divine Travels, came out in early February. Ingrid Hertfelder/Courtesy of the artist hide caption

itoggle caption Ingrid Hertfelder/Courtesy of the artist