And didn’t she dance differently back then?
The singer is the lovely Shadia and the scene is from a 1959 film “Kulub el azara” which starred Kamal al Shinnawi (the gent with the mo in the beige suit), Hussein Riad and Amina Rizk.
Movie trivia: Shadia and Kamal al Shinnawi appearing in more than 30 films together, usually as the hero and heroine.  They were ‘very close’ but never married and he ended up marrying Shadia’s sister Afaf.  After he and Afaf divorced he went on to marry Egyptian bellydancer Hagar Hamdy.