This article decodes every frequency, rumor, and reality surrounding the In Utero multitracks.
Here is why the (Waveform Audio File Format) is the only acceptable container for this material: Nirvana - In Utero Multitracks - WAV
Kick, snare (often multiple mics), hat, and multiple room mics. Albini notably used offset delays (15–30 ms) on room mics to create a "bigger" acoustic space. This article decodes every frequency, rumor, and reality