john travolta and olivia newton john star in this 70 version of the 50 . olivia come from australia and win the heart of music fan . youre the one that i want be the hot number from the film . the pair dress in black . tell me about it and stud . she coo . grease appeal to young generation . male or female duo perform summer night to karaoke track . the film also exaggerate . there be no t bird or pink lady in my school . or maybe i be too young and naive to know what be happen . the cast of grease be long out of high school and ranging in age from 19 to 35. barry gibb compose the title song . oddly enough and it be closer to disco than to rock n roll .