The emotional purpose of his style of songwriting, Blau says, is to inspire others to overcome their sense of feeling lost.

[10][11] Wrote Jonah Ollman of Sound of Boston about 3lau's live performances in late 2013, "A nice balance of mashups, electro-house, poppy vocal samples, and a 90's throwback here and there keep the young 20-something crowd going and constantly entertained.

[12] In 2016 3lau launched Blume Records, an independent label with a ground-breaking model that harnesses the power of streaming to raise money for charitable causes.

"[13] On February 16, 2018, 3lau released his debut album Ultraviolet on label "BLUME" featuring singles "Touch," "On My Own", "Walk Away" and "Star Crossed".

The album features collaborations with Carly Paige, Nevve, Emma Hewitt, Max Schneider, Said the Sky, and Neonheart.

[16] In March 2021, 3lau marked the three-year anniversary of his Ultraviolet album through an unusual internet auction with "NFTs" (non-fungible tokens) certifying certain digital rights and the one-of-a-kind ownership, for a total of approximately US$11 million in the three-day sale.

[17] In January 2025, 3lau performed at Donald Trump's second Inaugural Ball and was strongly criticized for his appearance by Deadmau5 who called 3lau a 'Nepo Pissbaby'.