The London-based musician known professionally as Eloise is using her elegant voice, heartfelt words, and exquisite, suave sounds to revive what’s becoming a dying art form in pop’s animalistic kingdom — the torch song. The 21-year-old singer-songwriter already has been heralded in the United Kingdom as a “Breaking Act” by The Sunday Times and for her “witty songwriting and bluesy musicality” by Ones to Watch.