Ya Imam Ali (AS)Everything submits to Hu and everything exists through Hu. Hu is the satisfaction of every poor, dignity of the low, energy for the weak and shelter for the oppressed. Whoever speaks, Hu hears his speaking, and whoever keeps quiet, Hu knows his secret. On Hu is the livelihood of everyone who lives, and to Hu returns whoever dies. (Imam Ali (AS) Nahj-ul-Balaga, sermon #108)
The above video is of Abida Parveen, one of the more talented singer/musician of Pakistan, she appears to be singing at a concert in one of the so-called "five star" hotels, to a mostly so-called "educated" upper middle class audience - most of whom well... (see for yourself) ...
This genre of Islamic music, when performed with a more intune audience, is very dynamic, and there is often an interactive call and response relationship between the singer and the listeners. The audience is usually seated on a carpeted floor and there is a verbal acclaim throughout the performance.
The song itself is a beautiful rendition of a famous poem by Amir Khusro, based on the well known hadith of the Prophet (peace and blessings on him and his Famiy) "Man Kunto Maula Ali-Un Maula, whoever accepts me as a master, Ali is his master too." This hadith is recognized as authentic by both Sunni and Shi'a Muslims.
Imam Ali (AS) was born on the 13th of Rajab.