Date of Birth: 
Place of Birth: Rapla, Rapla County, Estonia
About Urmas Sisask
- Urmas Sisask (born 9 September 1960, in Rapla) is an Estonian composer. One of the major inspirations for his music is astronomy.
- Based on the trajectories of the planets in the solar system, he created the "planetal scale", a mode consisting of the pitches C#, D, F#, G#, and A.
- Later, he discovered to his surprise that this was exactly the same as the Japanese Kumayoshi mode, which is also known as the Japanese pentatonic scale. Sisask is a Roman Catholic, and much of what he composes is sacred music.
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