After cutting their teeth singing backup for franco-folk-rock royalty like Michel Rivard and Kevin Parent, the ukulele-wielding sister duo of Stéphanie and Mélanie Boulay instantly endeared themselves to Quebec: Their 2013 debut, Le poids des confettis, is an intimate set of campfire-ready chansons loaded with crystalline melodies and mesmerizing harmonies. They've since experimented with more elaborate arrangements—the dramatic, desert-dusted jangle of ”Les couteaux à beurre”; the rainy-day indie of “La moitié de toi qui dort”—but the sisters' swoon-worthy voices still form the aching emotional core of their music.