His songs "Faded", "Sing Me to Sleep", "Alone", "All Falls Down" (with Noah Cyrus and Digital Farm Animals) and "Darkside" (with Au/Ra and Tomine Harket) have each been multi-platinum-certified and reached number 1 on the VG-lista chart in Norway.

[4] Starting out as a bedroom producer, he was better known as DJ Walkzz before signing a record deal and releasing his debut single "Fade" on NoCopyrightSounds (NCS) at the age of 17.

[6][7] In December 2015, his single "Faded", released on MER Musikk, reached as high as number 80 on the US Billboard Hot 100 and was certified triple platinum by the Recording Industry Association of America (RIAA).

[8] Then, in October of the same year, he achieved similar success with the single "All Falls Down", a collaboration with singer Noah Cyrus and British DJ and music producer Digital Farm Animals.

In July 2012, using feedback from his fans online, he began pursuing his music production and subsequently posted some of his videos on YouTube and SoundCloud.

[40] Billboard's Michael Sundius praised Sia's deft use of vocals, saying it "has all the sentimentality and candor that fans have come to love about his work.

[43][44] By March, Walker had produced 30 to 40 songs in total, but "Faded" marks his first single with Sony Music Sweden, and was considered the first to attain global success.

[54] He premiered several unreleased tracks, including a restrung version of "Sing Me to Sleep", as well as "Heading Home", the latter of which was first performed during his debut at Winter X Games.

[59] The official music video has also been released, showing footage of Tokyo, which is intended to showcase the excellent camera quality of Sony's phones.

[47] Succeeding "Tired", the song "Sky" with Danish music producer Alex Skrindo was released on 9 June 2017, and was part of the Insomniac Records Presents: EDC Las Vegas 2017 compilation.

[75] Along with their lead singer Chrissy Costanza, he performed the track at the 2017 League of Legends World Championship at the National Stadium in Beijing, as well as at Coachella 2018.

[76] On 17 November 2017, Walker released a remix of Swedish DJ Avicii's song "Lonely Together" featuring British singer Rita Ora.

"[80] During a performance at the 2018 Ultra Music Festival in Miami, Dutch DJ Armin van Buuren took to the stage where he premiered his new collaboration "Slow Lane".

[84][47] On 27 July, Walker released the song "Darkside" featuring Antiguan-German singer-songwriter Au/Ra and Norwegian singer Tomine Harket.

[110] Numerous remixes of the song have been released, including those by NIVIRO, Toby Romeo, RetroVision, and Da Tweekaz, as well as Alex Skrindo's collaboration with Sebastian Wiebe.

[118] Walker had previously been gifted a signed copy of the score for "Time", and the two musicians first met in April 2019 in Barcelona during one of the dates of the "World of Hans Zimmer – A Symphonic Celebration" tour.

[126] The next single, "Don't You Hold Me Down", featuring English singer Georgia Ku, was released on 27 August and marked Walker's third collaboration with PUBG Mobile.

[149][147] On 28 September 2023, Walker collaborated with Dutch electronic music group Dash Berlin and British YouTuber and musician Vikkstar on the song "Better Off (Alone, Pt.

[150] The song heavily samples the 1999 single "Better Off Alone" written by Dash Berlin founding members Eelke Kalberg and Sebastian Morin as part of the Eurodance project Alice Deejay.

[157] Also, in mid-May before the tour began, he opened a WhatsApp phone number for his fans in Singapore, Indonesia, and Malaysia to send him messages.

[168] Walker also announced that starting in March 2025, he will be performing in cities such as Barcelona, ​​London, Berlin and Paris as part of his "Walkerworld European Tour.

"[175] At a press conference on 9 November 2016, Walker said: "The concept with the mask is very cool, that is inspired by the hacker group "Anonymous" and the television series Mr.

It is a recurrent theme in the music of "Faded", "Sing Me To Sleep" and "Alone", which is a kind of conclusion to what one might call a trilogy", explains spokesperson Yonas Aregai for the record label MER.

"[19] When making his debut single "Fade", Walker was influenced by the sound of the song "Nova" by Dutch music producer Ahrix.

He has often spoken about the influence of Dutch music producer Tiësto, saying in a 2019 interview with Rolling Stone India: He's always been a very big inspiration to me growing up.

[183] DJ Mag described Walker's sound as a youthful mix of big room house, progressive and electro styles.

[4] Also, Ayaan Paul Chowdhury of The Hindu wrote that "his music is often darker and more minor in tone compared to the upbeat beats of contemporary tropical house.

"[184] Norwegian journalist Øyvind Holen described Walker's musical style as "much darker and closer to minor keys than the harmonies that characterize Kygo's contemporary tropical house.

Additionally, Walker received criticism from a "walkthrough" video on the production of his song "Alone", via the YouTube channel Future Music Magazine.

[187] In 2018, Walker donated a portion of the proceeds from his single "All Falls Down" to the World Wildlife Fund, which also supports charities such as Save the Children and UNICEF.