Recording of ET autopsy — Varginha, January 1996

The file surfaced on a regional file-sharing board in 2018, posted by an account that was created and abandoned the same day. Metadata embedded in the original upload places the recording device inside a closed, hard-walled room of approximately twelve square meters. Background reverb is consistent with tile and stainless steel.

An audio engineer commissioned by an independent investigator concluded that the recording was made on a single low-cost dictaphone, almost certainly concealed. There are no edits in the first thirty-six minutes. The final eleven minutes contain three separate gaps that have been digitally clipped rather than re-recorded over.

Two adult male voices identify themselves to one another by surname during the first six minutes. Both names correspond to physicians known to have been on staff at a regional hospital in January 1996. Neither has spoken publicly about the night in question. One died in 2004; the other has refused all approaches.

A third voice is heard intermittently from minute nine onward. This voice never identifies itself, gives only short instructions, and speaks in a register and cadence that the engineer described as "calm to the point of being inappropriate to the procedure being narrated." The voice is the only one that addresses the subject directly.

Beginning at 36:14 the recording captures sounds attributed to the subject of the procedure. These are not human, not feline, and do not match any wildlife species that the engineer was able to source for comparison. The sounds are tonal, narrow-band, and arrive in patterned clusters of three.

At 41:02 one of the physicians is heard to say, in Portuguese, "it knows we are here." The third voice answers immediately and the recording is clipped one-quarter of a second later. The remaining audio is procedural to the end.