The rhythm pattern in Arabic music and Oud is call Wazn (literally “measures”).A Wazn consists of a regular sequence of two or more time segments. Each time division is made up of at least two beats, which can be long or short (accented or un-accented). The time division of a Wazn can be equal or unequal in length: a Wazn in six-beat, for example, could be composed of two equal division have three beats each (3+3) or of equal division having, say, four beats and two; a Wazn containing eight beats could be made up of three different time division (e.g. 3+2+3). The first beat of Wazn is usually accented.
Every beat is represented by one of two types of drum strokes; Dum (heavy beat) which is produced at the centre of the drum skin or Tak (light beat) which produced at its edge.
To practice rhythm in Oud we will write down some patterns making D open-string as Dum and G open-string as Tak.

·Wazn Sma’ai Darij or Valus (3/4) Contains three beats one time division
D T T
Wazn Hcha’a (2/4) Contains three beats one time division.
D T T
Wazn Maqsom (8/4) Contains eight beats two time division (4+4).
D T T D T
Wazn Masmudi Kabir (8/4) Contains eight beats two time division (4+4)
D D T T T T D T T T TT
Wazn Sma’ai Thaqeel (10/8) Contains eight beats three-time division (3+4+3). D SS T S DD T SS