How did lata mangeshkar father realize that she would aje an extraordinary singe​

Lata’s ability to sing Raag Puriya Dhanashree helped her father to discover her singing talent. once her father asked his shagird (disciple) to practise a raag while he finished some work. she was playing nearby and suddenly a note of the raag that shagird was rendering, jarred. And the next minute, she was correcting him. When her father returned, he discovered a shagird in his own daughter