The Barmer Boys of Rajasthan, India. Courtesy of the artists hide caption

Philip Cheruiyot (second from left) leans in to read the song titles on the CD booklet brought by Diane Thram. Cheruiyot's grandfather sang on Hugh Tracey's recording of "Chemirocha II." Ryan Kailath hide caption

Galician bagpiper Cristina Pato and her band. Xan Padron/Courtesy of the artists hide caption

The husband-and-wife duo Niyaz: Loga Ramin Torkian and Azam Ali. Courtesy of the artists hide caption

Rana Santacruz's new album, Por Ahí, comes out May 5. Erin Patrice O'Brien /Courtesy of the artist hide caption

The Romanian band Taraf de Haïdouks returns, rebooted, to celebrate its 25th anniversary. Kamil Ornarowicz/Courtesy of the artists hide caption

Riyaaz Qawwali performed at New York's globalFEST music festival in January. Ebru Yildiz for NPR hide caption