Disclaimer: Always respect copyright. Distributing exact MIDI copies of commercial tracks without permission exists in a grey area for educational remixing.
Option A: The Transcription (Recommended) If you cannot find the file online due to takedowns, transcribe it yourself. nighthawk22 isolation midi top
Option B: Community Recreations Search on Musical Artifacts or Newgrounds Audio Forums. Disclaimer: Always respect copyright
Option C: StepMania File Extraction
Many rhythm game packs (like FFR Community Pack) include the song as .sm (StepMania). You can extract the MIDI from the .sm file using a text editor if notes are mapped to a keyboard. Option B: Community Recreations Search on Musical Artifacts
Nighthawk22 has not officially released the project stems for "Isolation." Therefore, most MIDI files available are fan-made "reconstructions" or "transcriptions." These range from amateur (wrong notes) to borderline perfect (ripped via advanced AI or perfect pitch listening).
If the knife feels hard to open manually: