Use the multitracks to teach the "anti-production" philosophy Albini famously outlined in his four-page fax to the band. Live Nirvana Minimal Processing
One notable example is the track "Heart-Shaped Box," which features a haunting guitar riff and lyrics that showcase Cobain's unique storytelling ability. The multitrack reveals the song's evolution, from a simple guitar riff to a fully realized arrangement featuring Novoselic's driving bass line and Grohl's pounding drums. Nirvana - In Utero Multitracks - WAV
This guide provides a technical and historical overview of the Nirvana - In Utero rather than layering instruments separately.
: Most backing tracks were recorded with the entire band playing together in one room, rather than layering instruments separately. Nirvana - In Utero Multitracks - WAV