Disney 's " sing it : pop hits " features a virtual voice coach to teach players crooning techniques for sliding between musical keys , performing harmonies , and breathing properly .
One could still watch black-and-white films from the liberal pre-nasser era on television and find ancient taxi drivers nostalgically crooning songs by umm kulthum or abdel halim hafez .
Passengers were often treated to a " soundclash " the conductor perhaps whistling the latest tommy steele , the driver loudly crooning something upbeat by edmundo ros .