Tangerine Dream "Song of the Whale" London, 2010
Live Version: https://www.youtube.com/watch?v=Vv1-XqZdvDk
Studio Version: https://www.youtube.com/watch?v=ccfaDlQls5w
The live clip is the best one I could find, although it's very much abbreviated from the original studio version. The whole song depicts both the beauty and power of our amazing aquatic mammal co-inhabitants. The studio clip is accompanied by some beautiful underwater filming, which is well blended with the music itself.
This was from TD's 29th album "Underwater Sunlight", which was released in 1986. To date they have released over 100 albums! It was the first appearance of keyboardist Paul Haslinger, who joined the group following the departure of Peter Baumann. It was also marked an increased front-and-center role for the electric guitar, which was played at first by TD's founder, the late Edgar Froese (1944 - 2015). It also marked a fairly complete departure from their "electronic ambient music" roots, as they began adding more instrumentation in succeeding albums (saxophone, flute, guitar, percussion, violin, etc.).