This is what Naushad Saab says
"We were making a film for Prakash pictures and needed a girl
to play the heroine’s younger sister, someone who could sing as
well. The singer G M Durrani suggested Suraiya and one day a
young girl dressed in a frock holding her grandmother’s hand
walked into the office. The director of the film C M Lohar
asked me to take her audition. The girl had no training in music
but she was very intelligent. She sang two songs for the film
Station Master. One was a chorus yeh rail hamare ghar ki
chuk chuk, and a solo number saajan ghar aaye. It was her
debut, both as an actress and as a singer. She was just nine
years old. I introduced her to A R Kardar, in whose film Nayi
Duniya, she gave playback music for the first time. Then came
Sharda, another film by Kardar. The heroine was Mehtaab and
Suraiya gave playback for the song Panchi ja piche raha hai
bachpan mera. Her playback singing for Mehtaab became so
successful that people thought it was Mehtaab herself singing."
So if we go by his statement the movie "Station Master" should be her
first movie.
Any one can tell more about this controversy?