FONDU’s vocals lean into a rock-inspired, auto-tuned rasp as he shouts “I’m not sleeping” and other mostly unintelligible lines, a deliberate choice that mirrors the unraveling of a fragile psyche.

One of the most successful rock bands of all time began with some bad winter weather in Upstate New York. Lou Gramm, the original singer of Foreigner, spoke about the group’s origins in a new ...