[Elecraft] OT: What's this data mode?

[Julian G4ILO]

Sorry for an off-topic posting, but I've been hearing a strange data
mode lately, like someone playing a slow tune on about 4 notes. It
sounds like a slow version of Olivia, but none of the settings in my
MixW can decode it, and it's starting to bug me! There's an MP3 of it
at http://www.g4ilo.com/files/datamode.mp3 if anyone would like to try
to identify it. Thanks in advance.

73,
-- 
Julian, G4ILO
G4ILO's Shack: www.g4ilo.com
K2 s/n: 392  K3 s/n: ???