Here is a link to the channel of an extremely young and talented guitarist. He has uploaded six different pieces up to now, and writes:
Hi I'm Adrian. I'm 14 years old and live in Philippines. Thanks for checking out my channel. Sorry I don't make tabs. I'm just not good at it. FAQ: Playing since I was 12 I don't take lessons. I practice about 90-120 minutes everyday Born: January 11, 2002
What suprises me is the little amount of practising he spends compared to these achievements in such a short period of time (assuming he started from zero in 2014). His oldest video is from the beginning of 2013, so really just after two years, and his newest one from the end of 2016, so just 3 years in total to learn all these pieces, and play them fluently enough for those youtube presentations.
In 2 years he has thus spent at most 365*2*2 = 1460 hours, and in three years at most 365*3*2=2190 hours to develop all those motor skills, musicality and so on. Surely his first uploads are far from perfection, but nevertheless with just 90-120min a day he has come suprisingly far, and that without taking lessons. Compared with the 10k hour rule of deliberate practise he has achieved much with just 20% of that time.
Is that plausible, do you know similar examples? Do you think this is impressive, or maybe I underestimate what could be achieved with deliberate and very disciplined practice?