Nakīsā and Bārbad are two characters from Ancient Persia, both famous court musicians for the Sassanid King Khosrow Parvīz in the early years of the 7th century. In Kurdish gnosis, they are thought to be linked by an absolute, unfailing spiritual love, similar to the one that united Joseph and Jacob or Jesus Christ and John the Baptist. In spite of having to undergo the trials of separation, they overcame all the obstacles before them and were finally reunited. Ostad Elahi was fond of honoring their memory and would often say their names aloud when he included their melody in the middle of an improvised passage.

As with all the melodies in the Tarz mode, the Nakīsā and Bārbad suite is weighted with nostalgic longing, for these ancient tunes are charged with the feelings and emotions of entire generations of mystics who sacrificed themselves along the path to God. In spite of its apparent simplicity, this composition is quite difficult to play, for if everything is not absolutely right (such as the harmony and rhythm), the desired effect will not be obtained. The Tarz mode requires subtlety and interiority; if performed as such, it will touch the innermost core of the listener.