The audio at the beginning sounded like the same odd sounds heard earlier on 6924.47 kHz. The signal was much weaker here, however. Jazz type music heard around 0301z.
Peaked around 0330z here, for a minute or two. Off just before 0334z.
Heard some instrumental music 0336z to 0338z. I think it was another station, also AM. Indeed, the UNID reported here seemed to have a carrier of 6930.237 kHz while the 0336z station was on 6929.974 kHz.