 Additionally blue whales off the coast of Sri Lanka have been recorded repeatedly making "songs" of four notes duration lasting about two minutes each, reminiscent of the well-known humpback whale songs.All of the baleen whale sound files on this page (with the exception of the humpback vocalizations) are reproduced at 10x speed to bring the sound into the human auditory band.Like other whales, the male fin whale has been observed to make long, loud, low-frequency sounds.