My Blue Thoughts is a concept that started three years ago, when Lauv, whose real name is Ari Leff, installed simple blue boxes at his concerts where attendees could drop pieces of paper with their thoughts. After each concert, Leff or his team would share pictures of the collected thoughts to his Instagram. Leff called it his compassion project, and envisioned it as a way for people to anonymously air what was on their minds. It sort of like a non religious confessional, Leff told...

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