IDK

Biography

Jason Aaron Mills (born May 24, 1992), known professionally as IDK (stylized as .idk.), also known as Jay IDK (a backronym for Ignorantly Delivering Knowledge), is a British-American rapper, singer, songwriter and record producer.

Early life

Jason Aaron Mills was born on May 24, 1992, in London to parents of Sierra Leonean and Ghanaian descent. He was raised in Prince George's County, Maryland, where he later started to make music initially under the moniker "Jay IDK".

Career

In August 2015, Mills released his second mixtape, titled SubTrap. The name stands for Suburban Trap or "trap music with substance". The album features the singles "The Plug," "God Said Trap (King Trappy III)", and "Cookie Addiction" featuring BJ the Chicago Kid. It features production from Skhye Hutch, was mixed by Lo Mein, Tim Webberson, Matt Weiss, and Delbert Bowers. Project management for SubTrap was overseen by Blade Thornton, David Kuti, Clayton Barmore, Quinelle Holder, and Ryan Booth. Mills' style of rapping has been compared to the early work of Kendrick Lamar, especially Lamar's 2011 album Section.80.
On June 24, 2016, Mills was announced as one of the performers at the 2016 Trillectro Music Festival. On September 9, 2016, Mills released his third mixtape Empty Bank and premiered it on Forbes. Mills opened for Isaiah Rashad on his "The Lil Sunny" tour which started in January 2017.
On October 13, 2017, Mills released his fourth mixtape IWasVeryBad, which was released for free in collaboration with Adult Swim. Mills later released the first six songs of the album as a series on Noisey. This series gave the album visuals, and a new story. The first six songs were part of the first season, with the second season going unreleased, which assumingly would've included the last six songs.
On November 9, 2018, Mills released his first EP IDK & Friends :).
On September 4, 2019, Mills released his debut studio album, Is He Real, including features from Pusha T, DMX, JID, Tyler, the Creator, Burna Boy, and GLC.
On June 26, 2020, Mills released his second EP IDK & Friends 2, which was used as the soundtrack for Kevin Durant's Basketball County documentary.
On July 9, 2021, Mills released his second studio album, USee4Yourself, including features from Young Thug, Offset, Westside Gunn, MF Doom, Jay Electronica, Lucky Daye, SiR, T-Pain, The Neptunes, Swae Lee, Rico Nasty, Slick Rick, Sevyn Streeter, and more.
On April 29, 2022, Mills opened for Zedd at Washington University in St. Louis as part of WILD.
On May 1, 2022, Mills performed at Swarthmore College as part of Worthstock.
On May 6, 2022, Mills released his third studio album, Simple., which included features from Denzel Curry and Mike Dimes, and was executively produced by Kaytranada.
On May 5, 2023, Mills released his fourth studio album, F65, including features from Fat Trel, NLE Choppa, Jucee Froot, Saucy Santana, Tay Iwar, Musiq Soulchild, Rich The Kid, Snoop Dogg and Benny the Butcher.
On January 23, 2026, he released his fifth mixtape, E.T.D.S. under Rhymesayers Entertainment, which received critical acclaim. Mills live performed a medley of the tracks "P.O" and "C.O.P", along with Black Thought and Kaytranada, at The Tonight Show Starring Jimmy Fallon on March 5. A music video for "C.O.P", directed by Eric André, was released on April 7, 2026.