(born Olivier Heldens; February 1, 1995) is a Dutch music producer from Rotterdam, Netherlands. His song "Gecko" caught the attention of Tiësto who signed him on his label Musical Freedom and released the track with vocals from British singer Becky Hill. Heldens also has a Weekly Podcast called Heldeep Radio.
In 2015 he started to produce tracks under the HI-LO alias and launched a few bass house and tech house songs. He later started a fresher style of music with tracks like “Shades Of Grey” with Shaun Frank and featuring Delaney Jane, “Melody”, “Bunnydance” and “Wombass” with Tiësto.
He entered the DJ Mag Top 100 DJs in 2014 making his debut at number 34. In 2015 he went up 22 places making him the 12th best DJ in the world and the “Best House DJ”