Enigmatic masked DJ/producer Marshmello makes groove-oriented, synth- and bass-heavy electronic dance music that regularly achieves mainstream crossover success. In the spirit of similarly cloaked dance figures like Deadmau5 and Daft Punk, Marshmello performs wearing a full head covering, in his case a marshmallow mask. Despite his early anonymity, Marshmello's career blew up in 2015 when he began releasing tracks online. From there came shows at New York's Pier 94, Pomona, California's HARD Day of the Dead festival, and Miami Music Week. He also scored a number five Billboard...