Standard CDs are 16-bit/44.1kHz. A 24-bit/192kHz file offers a much higher signal-to-noise ratio and more accurate reproduction of Adele’s powerful vocal nuances and the track's "wall of sound" production. Recording Origin: The track was recorded at Metropolis Studios in London and mastered by Tom Coyne at Sterling Sound

While often viewed as a breakup song, Adele has clarified that it is more about reconnecting with her past self and the people she loved during her late teens and early twenties.

A detailed catalog entry for the single: release dates (2015), formats (CD, vinyl, digital 16/44, 24/96, 24/192), catalog numbers, chart performance, engineering credits.

If you want a research paper on the technical aspects of the Adele – Hello single in high-resolution audio (24-bit/192 kHz FLAC), I can write a detailed paper covering: