Classically trained Lebanese trumpeter Ibrahim Maalouf plays a four-valved trumpet, an innovation he credits to his famous father. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Nkulee Dube's debut album is titled My Way. Robert Tlapu/Courtesy of the artist hide caption

itoggle caption Robert Tlapu/Courtesy of the artist

Emmylou Harris and Rodney Crowell have been friends and collaborators since the 1970s. Their new album together is called Old Yellow Moon. David McClister /Nonesuch Records hide caption

itoggle caption David McClister /Nonesuch Records

Bruce Robison and Kelly Willis' first album as collaborators is called Cheater's Game. Cody Hamilton/Courtesy of the artist hide caption

itoggle caption Cody Hamilton/Courtesy of the artist

Classical pianist Simone Dinnerstein (left) and singer-songwriter Tift Merrit collaborate on the new album Night. Lisa Marie Mazzucco/Courtesy of the artist hide caption

itoggle caption Lisa Marie Mazzucco/Courtesy of the artist

Kenneth Pattengale (left) and Joey Ryan, who record as The Milk Carton Kids. Their new album is called The Ash & Clay. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Dido's new album is The Girl Who Got Away. Guy Aroch hide caption

itoggle caption Guy Aroch

Justin Timberlake performs at Myspace Secret Show at SXSW on March 16 in Austin, Texas. Jason Kempin/Getty Images hide caption

itoggle caption Jason Kempin/Getty Images

Baba Salah at his home in Bamako, Mali. On his new album, Dangay, he calls attention to what he describes as human-rights violations in the north. Ed Alcock/Courtesy of the artist hide caption

itoggle caption Ed Alcock/Courtesy of the artist

An image for Son of Rogues Gallery's cover art. Courtesy of the artists hide caption

itoggle caption Courtesy of the artists

A coach and high school students work on Osvaldo Golijov's Passion According to St. Mark with the composer (right) in November 2012. Chris Lee/courtesy of Carnegie Hall hide caption

itoggle caption Chris Lee/courtesy of Carnegie Hall