With that question you have gone beyond the present understanding of the scientific community. Over the past 25 years or so scientists have confirmed that whales make a truly vast array of sounds. Humpback sounds contain the components of music, and are called songs. Sperm whales make a series of knocking sounds.
Blue whales make thunder below our human range of hearing.
Orca calls are completely specific to each community and pod, and are a huge variety of whistles, honks, squeaks and trills. Belugas are known as the canaries of the sea.