Others also admit steps of one and a half tones, like the Western harmonic minor and the steiger of Ashkenazic cantorial practice.
The majority include one or more three-quarter tone steps, this being the distinguishing characteristic of Arabic and other Middle Eastern music.
Due to that fact and the myriad of possible combinations, there are over one hundred maqamat, each named after its supposed city or region of origin in the Middle East.
In yet another meaning, maqam can be used for an improvised instrumental cadenza using a given musical mode (the vocal equivalent is called a mawwal, and is used for the petiħot interspersing the baqashot service).
The choice of maqam for a given Shabbat is determined by the subject matter of the Torah portion and is set forth in an index of the pizmonim book.