Dan Burrowes

Adrian Gupta, who at age 3,838 days mastered all major scales in two octaves, at 3,875 days, mastered his major arpeggios

Victoria Yan, who at age 2,875 days mastered all major scales and arpeggios in two octaves

Aaron Liang, who at age 3,784 days mastered all major scales in two octaves

Jennie Gearing, who at age 4,876 days mastered all major scales in two octaves

Matthew Lee, who at age 4,893 days mastered all major scales in two octaves, at 5,017 days mastered his major arpeggios

Edward Hao, who at age 3,353 days mastered all major scales in two octaves