1) Azerbaijani music 
`Heyrati” (Heyratı) – is one of the rhythmic mughams of Azerbaijan. It’s performed at a key of `C rast” of `Mahur-hindi” branch. Its time signature is – 4/4. It has a vital and heroic character. Musical performance like an introduction is executed after each vocal part. Mugham was used in `Leyli and Majnun” opera by Uzeyir H...