The singer says there are not enough films being made with singers in lead roles as one of the reasons could be the past track record.
"We do not really have cinema or films for a singer. For a singer the bias instantly comes, 'oh she is a singer' and in the industry we have had some (singers) who have not done it right. If there is a movie which demands me being there, not just for how I look (I might do)," Shreya told PTI.
"I don't even know if I can act. I'll have to go to a school to learn how to act. I can do that through my singing. But if it demands, then I can be there.
"That kind of a script has to come, the conviction of a director has to be there that she is the only one who can deliver that. I don't have that confidence so someone else should have on my behalf," she added.
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Asked if she was apprehensive to sing the iconic song, the singer said, "I was. My first instinct was, I have to do a song of hers and one of the songs of Madan Mohan ji. After picking it up, I started having second thoughts. 'What if people judge me for that?'"
The 32-year-old singer, however, is aware that comparisons might happen with the original track but says her victory will be when a young audience discovers the song.
The episode will air tomorrow on MTV.