There's far too much gloom n' doom in Off-Topic. Time for a story that is very, VERY cool.
Scientists say that humpback whales keep musical phrases to a few seconds, creating themes out of several phrases before singing the next one. Whale songs are generally no shorter than a pop song and no longer than a symphony. They also mix percussive and pure tones that follow an ABA form. Whales have a massive range (of seven octaves), but do not typically sing notes further apart than a scale in a song.
http://www.scientificamerican.com/ar...cal-bra&page=3