The New York band Jazz Passengers recently got back together, and recorded a familiar cover to mark the occasion. courtesy of DL Media/Justin Time Records hide caption

itoggle caption courtesy of DL Media/Justin Time Records

Teaming up with Indigo Girls' Amy Ray, Lucy Wainwright Roche sings with the wry guardedness of hard-won optimism in "October." courtesy of the artist hide caption

itoggle caption courtesy of the artist

The Beatles' Apple label, as seen on a copy of Abbey Road. Apple not only released The Beatles' own records, but also looked for younger acts the band hoped would flourish. Don Ryan/AP Photo hide caption

itoggle caption Don Ryan/AP Photo

Borrowing as much from soul as it does from rock, Patrick Watson's "Sit Down Beside Me" is both lovely and haunting. courtesy of the artist hide caption

itoggle caption courtesy of the artist

It takes tremendous talent to make simple pop as irresistibly infectious as The Young Evils' "Get Over It." courtesy of the artist hide caption

itoggle caption courtesy of the artist

American guitarist Cory Wong pairs up with Peruvian singer Paloma Godoy for "Quizas Un Dia Asi," an intimate take on an Afro-Peruvian classic. Chantel Hansen hide caption

itoggle caption Chantel Hansen

In “The Kirwan Song,” The Amazing cooks up a bewitching six-and-a-half-minute feast. Carl Abrahamsson hide caption

itoggle caption Carl Abrahamsson

"Undertow" begins simply before unfolding into a gorgeous sprawl of dark, hypnotic textures. Mia Kirby hide caption

itoggle caption Mia Kirby

Bruno Mars co-wrote "Right Round" by Flo Rida (featuring Ke$ha) and "Wavin' Flag" by K'naan. Atlantic Records hide caption

itoggle caption Atlantic Records

Sufjan Stevens' "Too Much" builds into a gorgeous, synthetic force field of huge proportions. Denny Renshaw hide caption

itoggle caption Denny Renshaw