Question: When was Hotline Bling released as part of an album?
Sentence (from "Millionaires discography"): Various songs remain unreleased with no confirmed release date, such as "Hush Little Boyfriend", "That's How We Party", "Rich Girls", "Not Everyone's A Millionaire", "Hairspray", "Candy Paint", "Beatbox", a song featured on Ashley Purdy's Instagram.
Relevant evidence: No