on 6389.9- (rounded)
1829 extra weak, audio barely at noise level, music guessed
(FOX, your frequency reading is quite accurate!)
1833 fading up a beat (or mod level higher with the new record?)
1840 so weak and noisy.... maybe I could guess a well known record, not those unknown ones
1859 smooth piano jazz 1937 some music (barely heard on peaks)