Bayātī, also known as Bayat and Uşşâk, is the name of a maqam in Arabic, Turkish, and related systems of music. Although, the maqam Uşşâk is very distinct from Bayati and follows other rules in Ottoman music theory. Some Islamic people are known by the name Bayati. It is also used as a 'name of home'. Bayati is similar to a natural minor scale, with the primary exception of a half-flatsecond degree. The dominant of the scale is on the fourth degree. It quickly reaches the dominant and above in order to avoid the Uşşâk tast. It behaves ascending-descending and ends with the Uşşâk taste on the tonica. The maqam is immensely popular in the Arab world, particularly in the Levant. In secular settings, it is favored in dabke and pop music. Bayati is also used very often in religious liturgies of the Middle East. It is the favored maqam of use for the adhan in Medina, Saudi Arabia. Syrian Jews have an abundance of pizmonim in this maqam and usually apply it to all Bar Mitzvahs and to Saturday Night services. According to the Assyrian Church of the East, this mode is called Qadmoyo. Related maqamat are Husseini and Bayati Shuri.
Nucleus
The central tones of a maqam are created from two different intervals. The eleven central tones of the maqam used in the phase sequence example above may be reduced to three which make up the "nucleus" of the maqam: The tone rows of maqamat may be identical, such as maqam bayati and maqam 'ushshaq turki: But be distinguished by different nuclei. Bayati is shown in the example above, while 'ushshaq turki is:
Maqam Bayat on La: La / Si / Do / Re / Mi / Fa / Sol / La.
Maqam Bayat Si: Si / Do / Re / Mi / Fa sharp / Sol / La / Si.
Maqam Bayat Do: DO / Re / Mi flat / Fa / Sol / La flat / Si flat / Do.
Maqam Bayat Re: Re / Mi / fa / Sol / La / Si Flat / Do / Re.
Maqam Bayat Mi: Mi / Fa / Sol / La / Si / Do / Re / Mi.
Maqam Bayat Fa: Fa / Sol / La flat / Si flat / Do / Re flat / Mi flat / Fa.
Maqam Bayat Sol: Sol / La / Si Flat / Do / Re / Mi flat / Fa / Sol.
Maqam Bayat Si Flat: Si Flat / Do / Re flat / Mi flat / Fa / / Fa Sharp / La flat / Si flat.
Maqam Bayat Do Sharp: Do Sharp / Re / Mi / Fa Sharp / La flat / La / Si / Do sharp.
Maqam Bayat Mi Flat: Mi flat / Fa / Fa Sharp / La flat / Si flat / Si / Do flat / Re flat.
Maqam Bayat Fa Sharp: Fa Sharp / Sol / La / Si / Do Sharp / Re / Mi / Fa Sharp.
Maqam Bayat Sol Sharp: Sol Sharp / La / Si / Do Sharp / Re Flat / Mi / Fa Sharp / Sol Sharp.
is Half-Flat. is Half-Sharp. Quartertone Intervalls are not fixed. A general rule: They tend to be less flat while playing an ascending phrase and vis-à-vi. Those intervals also differ from region to region. In Turkish Ottoman music, the Beyati quartertone is generally played slightly less flat than the ‘darker’ Ussak tone.