Attempts to go out on Arab offers  - causes and problems -

The search in Arabic music is so interesting, and requires knowledge of what the Arabs are familiar with certain weights according to a regular tune accurate in line with the taste of the Arab sound, which tends to simulate the Arab mood based on pure instinct.
When the time accumulated, the poets were looking for a new melody to get out of the strict system of Hebron, as this world set the weights of Arabic poetry in fifteen weight added to the student Sebwayh Said bin Masada another sea.
And Hebron was able to create circles of five containing all these seas, opening the door to poets to draw from them what they want of new weights, and yet all the poets resorted to the invention of new weights and types in the rhymes hoping to implement a new tune freed from the shadow of a shadow over them throughout Many centuries. We heard the square, the pentacle, the musk, the doll, the scarf, the item, and then the tefillah and the prose poem.
All of these terms represent stages of exit on the weights of Hebron and its five disciplined circles.
The research has made it clear that these attempts have been successful or unsuccessful.