Assumptions (song)

"Assumptions" is a song by Sam Gellaitry. Originally released in 2021 on the IV EP, the song had a resurgence in popularity in 2025 thanks to its use a viral video featuring Russian dancer Ruslan Aidaev, also known as "Blue Shirt Guy".^[1][2] The song peaked at number 5 on the Hot Dance/Electronic Songs chart in Billboard. The song was also featured as part of the pre-intro of Apple's WWDC 2025, held on June 9, 2025.^[3]

"Assumptions"
Single by Sam Gellaitry
from the EP IV
Released	2022
Recorded	2019–2021
Genre	Synth-pop
Length	3:40
Label	FFRR
Songwriter(s)	Sam Gellaitry
Producer(s)	Sam Gellaitry
Sam Gellaitry singles chronology
"Name to a Face" (2022) "Assumptions" (2022) "Darling Drive" (2024)

"Assumptions" was originally produced in 2019. In an interview with Billboard, Gallaitry stated that it was "six takes of breathy and high-register shit."^[4] In 2021, American producer Yung Bae featured the song in his mix on Triple J.^[5] In 2023, producer Kaytranada remixed "Assumptions".^[6] Gellaitry described Kaytranada as "a true innovator and inspiration to my music".^[7]

Charts

Chart (2025)	Peak position
US Hot Dance/Electronic Songs (Billboard)[8]	5