That's why MYC has singing and solfege as a mandatory part of class.
"... Another scientific study recently found a strong correlation between early musical study and the development of absolute pitch (also called perfect pitch - the ability to identify exact pitches without reference to an instrument). Six hundred musicians were surveyed. Forty percent of the musicians in this study who had begun training at four years of age reported absolute pitch, whereas only three percent of those who had started training at nine years of age did so."
Baharloo S, Johnston P, Service S, et al. Absolute pitch: An approach for identification of genetic and nongenetic components. American Journal of Human Genetics, 1998; 62:224-231.