Sounds like spooky pirates are starting!
Tapes of different radio stations are being played, along with instrumental music bits. Heard an ID for Radio Moscow, DX Party Line on HCJB, talking about antennas to improve reception, at around 01:00.
Periods of long silence between these bits of audio, creating a mystery, or going through recordings the operator has? With sideband, there's no carrier to tell if they've even unkeyed the transmitter.
Interesting use of 7000 khz, narrowly missing the ham band above, I've never heard a station here before, pretty creative!
Booma