Legendary guitarist Warren Haynes practically ignores his guitar and instead pours out his heart in "Save Me." Stewart O'Shields hide caption

In "Warning Signs," Eilen Jewell has a sweet and clear voice with a killer instinct lurking beneath the shiny surface. Liz Linder hide caption

From a 1973 album that was never released, psychedelic rocker Arthur Lee offers a bit of homespun philosophy in "Beep Beep." Herbert Worthington hide caption

Jason Isbell and his band, The 400 Unit, give "Never Could Believe" a swinging, defiant mood. Courtesy of the artist hide caption

Marcia Ball infuses "Everybody's Looking for the Same Thing" with Texas twang and a bluesy, rollicking piano style. Courtesy of the artist hide caption

With Jack White's assistance, Wanda Jackson sings a timeless lover's lament in "Like a Baby." Courtesy of the artist hide caption

Ray Charles' gritty voice takes a trifle of a tune and transforms "Isn't It Wonderful" into an intimate and enticing lover's plea. Courtesy of the artist hide caption

The young Hawaiian ukulele master Jake Shimabukuro infuses a rock staple with a moment of tropical island Zen. Danny Clinch/Courtesy of Shore Fire Media hide caption

"I Want to Thank You" shows off the heavenly exuberance that helped make Billy Preston a star in the late '60s. Apple Corps Ltd. hide caption

In "Waltz," Ian Axel's voice possesses the sweetness of youth, the stubbornness of a teenager and the swagger of a rock star. Davey Wilson/Courtesy of Shore Fire Media hide caption

In "Teenage Pregnancy," the genre-less band Cake addresses its topic using only the emotional tug of a haunting melody. Robert McKnight/Courtesy of the artist hide caption

Working with reggae legend Toots Hibbert, JJ Grey makes "The Sweetest Thing" sound both gritty and lilting. Tobin Voggesser hide caption

"Losing You" is a prime example of the power Mavis Staples still holds in her vocal cords. courtesy of the artist hide caption

OMD's "soul music" isn't just electronic. Thanks to an Aretha Franklin sample, it's electrifying. Mark McNulty hide caption

Dr. John's "Change of Heart" is a self-written exemplar of classic rhythm and blues with a jaunty New Orleans twist. James Demaria Productions hide caption