"SOS" is the first posthumous single by Swedish DJ Avicii, featuring co-productions from Albin Nedler and Kristoffer Fogelmark, and vocals by American singer Aloe Blacc.

[1] It was released on 10 April 2019 as the lead single of Avicii's posthumous third studio album, Tim (2019).

It features an interpolation of "No Scrubs" by TLC, written by Tameka Cottle, Kandi Burruss, and Kevin "She'kspere" Briggs.

[5] The song was completed by a team of writers and producers following Avicii's death in April 2018.

[6] Co-producers Kristoffer Fogelmark and Albin Nedler confirmed that after Avicii's death, they received the MIDI file for the song that he had produced, and said that all the sounds and notes in the song were from Avicii himself without any additional production.