Recently, AI tools like Moises or Lalal.ai claim to separate Nevermind or In Utero into stems. These are reconstructions based on machine learning. They leave "ghosts" (phaser artifacts) behind.
The hunt for represents the holy grail for audio engineers, remixers, and die-hard fans of the legendary 1993 album. While official 24-bit WAV multitracks (stems) are not typically sold as standalone consumer products, they have entered the public consciousness through specialized game leaks and high-fidelity anniversary reissues. Understanding the In Utero Multitracks Nirvana - In Utero Multitracks - WAV