Halim Abdul Messieh El-Dabh ( , '' Ḥalīm ʻAbd al-Masīḥ al-Ḍab '' ʻ ; born March 4 , 1921 ) is an Egyptian-born American composer , performer , ethnomusicologist , and educator , who has had a career spanning six decades .
( '' Ḥalīm ʻAbd al-Masīḥ al-Ḍab '' ʻ ) ; born March 4 , 1921 ) is an Egyptian-born American composer , performer , ethnomusicologist , and educator . He has a career spanning six decades .