We’re not sure which of these facts is more incredible: that The Chieftains have been making music for 50 years or that their latest album features a “tin-whistle tribute” recorded in space by NASA astronaut Cady Coleman. Amazingly, it turns out that deep-space collaborations are just the tip of the iceberg on Voices of Ages, which finds the legendary Irish folkies celebrating half-a-century at the top with an eye-watering array of famous faces. And featuring guest stars like alt-rock troubadour Bon Iver, rockabilly singer/songwriter Imelda May and the Grammy-winning Americana outfit The Civil Wars, it all makes for one hell of a birthday party.