Why does Punjab produce so many singers? Even from the nearby Haryana, New Delhi, or Uttar Pradesh, the best singers usually sing in Punjabi. So, why are so many good singers Punjabi speaking?
Well, there is an answer.
A perfect pitch is the ability to discern sounds that are close (within 6%) in frequencies.
Having a more perfect pitch makes you better at singing.
Learning a tonal language makes you better at perfect pitch.
And Punjabi is the only tonal language of India!