Halsey dedicated 'Without Me' to Juice Wrld at her Brooklyn concert on Tuesday night (10.12.19).
The US pop star performed the hit, which she released a remix of featuring the late rapper, during her Pandora Live set at Avant Gardner, following the tragic news of his passing on Sunday (08.12.19) after he reportedly suffered a seizure in Chicago's Midway airport.
Before performing the song, Halsey told the crowd: "Life is short, we should appreciate every single moment that we have together."
The 'Nightmare' singer previously paid tribute to the late 'Lucid Dreams' hitmaker, who was just 21, hailing him "the fastest brain in the game".
Alongside a snap of the pair sharing a hug, she wrote on Instagram: "Sweet boy. The fastest brain in the game. Your creativity, endless. Immortal. Rest in power. I can't even explain the sadness."
Ellie Goulding led tributes to Juice - whose real name was Jarad Higgins - who she described as a "sweet soul".
The 'Army' hitmaker - who worked with Juice on their track 'Hate Me', which was released in June this year - tweeted: "I can't believe it... you were such a sweet soul. I'll always remember meeting you and your family on the video set and thinking how close you were. You had so much further to go, you were just getting started. You'll be missed Juice (sic)"
In a separate tweet, the 32-year-old singer shared a picture of herself with the hip-hop star with the caption "X", and a third tweet simply featured a sad looking emoji.
DJ and producer Zedd reminded his followers to "be kind to one another".
He wrote: "really shocked and sad to find out juice wrld passed away, ... and so young too...
"a reminder that life can be over any moment...
"be kind to one another. (sic)"
And Lil Yachty - who worked on a remix of Juice's song 'All Girls Are the Same' - expressed his sadness, as he wrote: "Wow, I can not believe this. Rip my brother juice world
"No man no!!!!!!!!!! (sic)"
Juice landed in Chicago on Sunday morning following a flight from California, and witnesses told TMZ he suffered the seizure whilst walking through the airport.
Law enforcement sources have reported he was bleeding from the mouth when the paramedics arrived on the scene, and although he was still alive when he was rushed to the hospital, he was sadly pronounced dead a short time later.
The exact cause of death and the cause of the reported seizure as not yet known.