“In 2025, Bon Iver announced his retirement, and the search began for his replacement.” That’s the setup, anyway. Bon Iver leader Justin Vernon is not retiring, as far as anyone knows, and you can’t exactly replace a solo artist in his own band. But that’s the conceit of director Jos Diaz Contreras’ cameo-jammed video for “Day One,” a song from Bon Iver’s recent album SABLE, fABLE.