Then came fan art, fan fiction and fan covers of the songs on social media. When the show opened off-Broadway last month, it sold out entirely. In February, Be More Chill will move to Broadway.

How did the composer turn a low-profile musical with the tween-friendly title Be More Chill ... people around the world to post Be More Chill fan art, stream the cast album more than 150 million ...

I don’t really know what, if anything, “Be More Chill” (at the Lyceum ... a reality untroubled by other humans would be drawn to art that is untouched by anything human.

“Be More Chill” is already a Broadway Cinderella ... miraculously hit 200 million-plus streams, wound up a fan-art favorite on Tumblr, attracted commercial producers and sold out last summer ...