We've just completed our 2nd pair of Tuba 30's. So I'm looking forward to trying out some sounds at 30hz! (Well, something between 30 and 35hz will do...) We've been looking for some whale-song recordings that go that low but struggling so far

I realise that most dance music doesn't got that low (or need to go that low) - but it'd be great to have a few snippets that really rumble. Any recommendations for high quality recordings that delve deep into the 30-35hz regions? We love drum and bass, jungle, techno etc, but anything goes, so any suggestions for your deepest recordings will be gratefully received
