Mansour Rahbani (Arabic: Ù ÙØµÙر Ø§ÙØ±ØØ¨Ø§ÙÙ, romanized: Manṣūr Al-RaḥbÄni; 17 March 1925 â 13 January 2009) was a Lebanese composer, musician, poet, philosopher, thinker and producer, known as one of the Rahbani brothers, and the brother-in-law of the singer Fairuz.