Three weeks later he made a first official release with the two-disc-record "Bubbling Beats 1",[14] whereupon he toured through the Netherlands and appeared in a number of dance clubs.

[16] Remixes for Gregor Salto's and Chuckie's "Toys Are" together with Dutch DJ and producer R3hab as well as a mix of "You Do Not Love Me" by Sidney Samson and Skitzofrenix in 2008 remained at the top of the dance charts for weeks.

[25] In 2011, Hardwell was ranked in the Top 100 DJs category by DJ Mag for the first time and jumped on number 24 as the second-highest new entry behind Skrillex.

[33] The single "Apollo", released on 1 February 2013, reached the charts of many European countries, including Austria, Belgium, France and the Netherlands.

[37] Hardwell also adapted his style of the growing big-room house fan base with "Countdown", which was a collaboration with American DJ MAKJ.

[43] Hardwell and Tiësto performed a back to-back set at Tomorrowland 2014, which had more than 6 million views on YouTube as of January 2021,[44] and announced their latest collaboration.

[42] At the same time, the third official single release came out of the album, "Young Again", which contains vocals from British singer Chris Jones.

[48] In December 2014 Hardwell announced the official track list and cover of the then-upcoming album,[49] which featured collaborations with producers like Tiësto and Headhunterz as well as singers like Andreas Moe and Mr. Probz.

Together with DJs like Dannic, Dyro, W&W, Kill the Buzz, Headhunterz, and Julian Calor, he hosted his own "Revealed" stage, named after his record label.

In July 2015, the sixth episode of his Revealed-Presents compilation was released in parallel with "Survivors", which, similar to its predecessors, gained great success.

On 7 November 2015 Hardwell presented the biggest DJ-solo show in Germany, held in collaboration with the "BigCityBeats World Club Dome".

In addition, he donated all the proceeds of the festival as well as the ones from the fans to the Magic Bus Charity Project, which enables children from poor backgrounds to achieve better education in cooperation with the "United We Are Foundation" and "Guestlistevents in".

She has my full support and I'm proud to be the producer of her first single 'Perfect World'"Hollywood" with Afrojack appeared on 25 January 2016[68] and jumped directly to #1 on the Beatport charts.

[77] Hardwell's collaboration with Craig David called "No Holding Back" was released on 19 August 2016,[78] which contained elements of UK Garage and deep house.

[89] Shortly thereafter, a reworked version of the song "Crank" from Jewelz & Sparks appeared on Revealed Recordings, produced by Hardwell under his pseudonym "HWL".

[94] From 2 to 3 February 2017, Hardwell made a reworked version of the song "Spaceman" available as a free download for its 5-year anniversary, which included vocals by singer Heather Bright.

[97] At the Ultra Music Festival on 25 March 2017, Hardwell premiered new productions with Austin Mahone, Maddix, Moksi and Henry Fong.

[108] "Police (You Ain't Ready)" with Kura was released the next day, a track which represents a crossover of genres reggae, big room, hardstyle, and trap.

[121] In addition to the songs of his two Hardwell & Friends EPs, it also contains the intro of his 2017 live shows, "Who's in the House", as well as the unpublished track "The Universe".

[123] During the Amsterdam Music Festival on 21 October 2017, which included the release of this year's DJ Mag Top 100 list, he first played a back-to-back live set with Armin van Buuren, which was previously announced as "Two is One".

Patil Stadium and securing enough donations by fans and sponsors alike to bring a brighter future through education to more than 100,000 young children.

[136] Hardwell announced on his Twitter account on 24 April 2018 that he has launched a new electronic pop sub-label titled "Gemstone Records",[137] whose main goal is to promote new talent and reach a larger audience, while encompassing multiple genres such as deep house, future house, future bass and electro pop.

[139] On 25 May 2018, he collaborated with Netherlands-based jazz and pop orchestra Metropole Orkest to release an episodic two-part EP titled "Conquerors".

[143] The song incorporates elements of multiple genres other than its prevalent big room sound, including hardstyle, house, and techno.

[145][146] On 7 September 2018, Hardwell announced via his Instagram page that he would be clearing his touring schedule indefinitely to take time off for his personal life.

[149] Hardwell continued to release a series of singles after his announcement: reggae-influenced Light It Up with Suyano and Richie Loop, Out Of This Town with Vinai and Cam Meekins, and Kicking It Hard.

A Reddit post alleged that a 'mysterious' Mr X played at Sunnery James & Ryan Marciano's event, much believed to be Hardwell.

In a statement, Knaup said, "I would like to officially confirm that whilst Robbert did make an appearance at Sunnery James & Ryan Marciano's ADE party, he was not there to perform but merely there to support his friends' event and to enjoy the night.

Hardwell then released numerous singles such as "ACID", with Maddix and Luciana, "Anybody Out There" with Azteck and Alex Hepburn, "The Abyss" with French artist Space 92, a cover of "Human" by The Killers with Machine Made, his 2023 set intro titled "Shotgun (It Ain't Over)" with singer Bright Lights.

[174] In his studio, he works with a Roland A-49 MIDI Keyboard Controller White, Crane Song Avocet Remote II, and Solid State Logic XLogic G-Series Compressor.