Jazzy & Sonny Wern

With an unfussy, smoky vocal timbre, Irish singer Jazzy is a throwback to a style of house music that pre-dates her own birth. The revival works well for her: she's notched several big hits in both the U.K. and her home country, as both a featured singer ("Make Me Feel Good" by Belters Only) and as an assured solo performer ("Giving Me," "Feel It," "Somedays"). She was born Yasmin Byrne in 1996, and raised in the Dublin suburb of Crumlin, one of three children born to a single mother and a Jamaican father with whom she has no relationship. Despite the challenges of getting by...