[12] He took particular inspiration from the track "Traffic", prompting him to download the specialist digital audio workstation FL Studio, enabling him to start producing.

On 30 September, Garrix released a remix of "Project T" by Sander Van Doorn and Belgian-Greek DJ duo Dimitri Vegas & Like Mike which quickly hit number one on the Beatport charts.

In an interview with British media company Digital Spy in early 2015, Garrix noted that Usher is a "humble" artist and a great collaborator to whom he can directly give input.

[28] Garrix also worked with multi-Grammy winner Ed Sheeran on a track called "Rewind, Repeat It" which he played at Ultra Music Festival in Miami in March 2015.

[31][32][33][34][35] On 26 August 2015, Garrix announced that he had left Spinnin' Records and MusicAllStars Management due to a conflict over the ownership of his music.

[38] He also went on to sue his manager, Eelko van Kooten, stating that he was told "false and misleading information" before signing with Spinnin' Records.

[39] On 2 December 2015, Garrix reportedly settled with Spinnin' Records in their ongoing legal dispute over the ownership rights of his music.

[41] On 11 March 2016, he released his first single via Stmpd Rcrds titled "Now That I've Found You", featuring the vocals of John Martin and Michel Zitron.

On 18 March 2016, he made use of his one-hour set to premiere ten new unreleased tracks at Ultra Music Festival, including collaborations with Jay Hardway, Julian Jordan, Ed Sheeran, Bebe Rexha, Third Party, and Linkin Park[43] along with Area21, Garrix's duo with Maejor.

[45] He explained that, "their forward thinking approach to streaming and incredible roster of talented artists combined with their passion and understanding for my vision of the future of my music made this a no brainer.

"[54] It was announced that Garrix would co-star, alongside British DJ Carl Cox in an EDM-themed documentary titled "What We Started".

[59] On 31 December 2016, Martin Garrix played "Scared to Be Lonely", featuring British singer Dua Lipa, for the first time while headlining the stage at his first ever show in Myanmar.

Garrix announced that he would be supporting Canadian singer Justin Bieber on his Purpose World Tour in Australia which began in March and at the 'Barclaycard presents British Summer Time Hyde Park' show on 2 July 2017.

He performed the song with Lipa on The Tonight Show Starring Jimmy Fallon in March[61][62][63] before releasing two volumes of extended plays featuring twelve remixes.

On 14 April 2017, Garrix debuted a collaboration with Australian singer Troye Sivan, who later joined him on stage for their performance at the Coachella Valley Music And Arts Festival in California.

[75] Garrix appeared as the face of Armani Exchange in their Fall 2017 campaign, becoming one of the first few internationally recognized DJs to enter modeling.

[78] He also premiered the song "So Far Away", a collaboration with French DJ David Guetta, who joined him on stage to perform it,[79] as well as his first solo track in over a year, "Pizza", which received an official release on 25 August 2017.

Garrix was listed in Forbes' World's Highest-Paid DJs 2017 ranking with earnings of $19.5 million for 12 months prior to June 2017.

[85][86][87] On 20 September 2017, a Dutch judge ruled in favor of Garrix who regained the rights to his music that were previously signed to Spinnin' Records and MusicAllStars, to have his contract permanently terminated.

British singer Ellie Goulding was originally supposed to be featured on the song but her label prevented the release after it was previewed by Garrix at his Tomorrowland set.

[96] On 29 July, he headlined the Tomorrowland Belgium 2018 music festival and released the single "High on Life", a collaboration with singer Bonn, immediately after his closing set ended.

Garrix was announced as a resident DJ at Ushuaia Ibiza Beach Hotel, performing on Thursdays from 5 July to 30 August 2018.

The songs are all part of the Bylaw EP, and are: "Breach (Walk Alone)" with Blinders, "Yottabyte", "Latency" with Dyro, "Access", and "Waiting for Tomorrow" with Pierce Fulton featuring Mike Shinoda.

[101] In October 2018, Garrix was ranked number one on DJ Mag's annual Top 100 DJs list, winning for the third time in a row.

[112] A few days after Spinnin' Records won the appeal, Martin's computer was hacked by an unknown assailant where the hacker stole and leaked a number of unreleased songs, including "Rewind, Repeat It".

[115] For the 2020 King's Day celebrations in April, Garrix played a set from the rooftop of A'DAM Toren in Amsterdam in place of the usual in-person festivities due to the COVID-19 pandemic.

[118] On the occasion of his 25th birthday, 14 May 2021, Garrix released "We Are the People" featuring Bono and the Edge from Irish rock band U2, which served as the official song of UEFA Euro 2020.

During his visit Garrix performed a one-hour DJ set to an excited crowd of 100 children and young people, some aged just three years old and accompanied by their SOS mothers.

In September 2019, Garrix held a show in his home country the Netherlands with all proceeds going towards the War Child Holland Charity.

[144] In June 2020, he appeared in a public service announcement alongside other celebrities for War Child, an organisation that supports and empowers the most vulnerable communities, focusing on children and their families.