Glaive performed, wrote, mixed, and mastered it in his childhood bedroom in Hendersonville, North Carolina, with FromTheHeart handling its production.

"Astrid" is an emo-leaning track built around a guitar line, electronics, a footwork-sounding programmed kick drum, and pitched-up vocals.

A music video directed by Charlie Grant and Hunter Ray Barker premiered on February 17, 2021, and depicts Glaive standing, surrounded by farm animals and a dancing girl.

[2] On June 29, 2020, Glaive self-released "Astrid", the lead single from his debut extended play (EP), Cypress Grove.

[3] It is an emo-leaning song built around a guitar line, electronics, a footwork-sounding programmed kick drum, and pitched-up vocals.

[14] The Fader's Colin Joyce said it "sounds like an American Football track played back at the wrong speed" and Cat Zhang for Pitchfork called the song's opening "slightly provocative".

[4] Sophie Leigh Walker from The Line of Best Fit named it Glaive's "defining single",[11] while Alex Robert Ross of The Fader lauded it for being an "expertly crafted emo-leaning [song]".

[7] The Los Angeles Times's Mikael Wood said it "carr[ies] sweet, shapely melodies nearly as catchy as those on Top 40 radio" and retrospectively, Joyce said the song "quickly became important texts for a new generation of always-online pop musicians and fans".