Yeah, but unless the song is played in 4/4 time where the second '4' is minutes, most of us aren't going to be playing actual songs in ten minutes unless we already play a fretted stringed instrument.
My theory is that the rounder the large number, the higher the probability that the number was plucked from thin air if not, um, from some place considerably less fragrant. Therefore virtually every rule quoting 10,000 hours (or minutes, days, furlongs, Smoots, furlongs per fortnight, firkins per Svedberg, seriometer per jiffy, etc.) can safely assumed to be highly inaccurate. Time was even historians operated this way, so that one might chronicle an army of 10,000 men which actually consumed 800 meals at a sitting. Took us a long time to realize that the "10,000" was thrown out for a certain affect rather than as an attempt at accuracy, even though far as I can tell we as a species have never stopped doing it. Therefore "It takes 10,000 hours to learn sax" merely means "It's hard to learn sax", but with a government grant consumed.