Born in Seoul, South Korea, Yoon Ah Oh grew up in a musician family and completed her undergraduate degree in classical composition major at Hanyang University.

In 2007, Yoon Ah moved to the USA to study Jazz at Berklee College of Music.
Yoon Ah was honored with the entrance award, the Berklee North America Scholarship.
At Berklee, she earned her diploma in Jazz Composition and Piano Performance (Cum Laude) and received the Piano Department Achievement Award, CJ Foundation Scholarship and the Berklee Achievement Scholarship as a student.

Yoon Ah quickly became one of the most demanded pianists in the NorthEast area, thanks to her incredibly versatile repertoire and skills ranging from Jazz, Funk, Gospel, R&B, Pop, Rock and Classical music.

H & A is a unique duo of pianist Hyuna and trombonist Amadis, an original , warm combo with a versatile repertoire of Jazz/Pop/World/Holiday Tunes.