Enigmatic masked DJ/producer Marshmello makes groove-oriented, synth- and bass-heavy electronic dance music that found mainstream crossover success in the late 2010s. 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 electronic/dance album with his full-length debut Joytime. Collaborative hits followed, with artists including Selena Gomez ("Wolves"), Khalid ("Silence"), and Bastille (the platinum hit "Happier"). He hit his solo chart peak in 2019 with his revolutionary in-game concert Fortnite Extended Set. By the time summer rolled around, "Happier" had topped the Billboard electronic chart and peaked at number two on the Hot 100. Meanwhile, a collaboration with Chvrches, "Here with Me," began its steady rise up the charts, giving the indie outfit their highest-charting single to date. Marshmello also added additional cross-genre collaborations to his singles list, including "Light It Up" with Tyga and Chris Brown, "One Thing Right" with country singer Kane Brown, and "Rescue Me" with pop-punkers A Day to Remember. The latter track appeared on Joytime III, which arrived in July 2019 and featured guests Slushii, Flux Pavilion, Elohim, and Wiwek. In February 2020, Marshmello joined Svdden Death for the track "Crusade," and later Halsey for the ebullient "Be Kind." The following year saw Marshmello deliver collaborations with Aussie singer/songwriter Vance Joy ("You"), Kentucky rapper 2KBABY ("Like This"), and Iranian singer/producer Arash ("Lavandia").