Heather Hyoeun Ahn composes lyrical, depictive music for chamber and orchestra ensembles focusing on the distinguished timbre of each instrument by concentrating on the potential and characteristic sound colors. She often gets inspiration from visual arts, including artworks and films, where her major works laying down.

One of her works, The Impression, inspired by five Claude Monet’s works, was awarded the 3rd prize from the 1st Ewha Composition competition in 2014 and it was performed at Kimyoungeui Grand Hall at Ewha Womans University. She also enjoys composing music for film, restoring, and collaborating with student animators at CalArts. Most recently, her first cello solo with electronics work Shining in the Darkness was presented at the Cello Seminar in New York, in May 2020. In 2016, her saxophone quartet work Light and Darkness was performed by Keuris Quartet, at the Nanyang Academy of Fine Arts, in Singapore Saxophone Symposium.

Heather is also a performing cellist. In Spring, 2020, she joined the University of South Florida cello studio, studying with Scott Kluksdahl, where her work for the studio was performed by colleges at seven recitals. During the semester, she participated Bonny Hampton Cello ensemble festival and had her virtual recital playing her Shining in the Darkness and Bach's Cello Suite no.2.

Heather is currently pursuing her DMA in composition from the Peabody Institute of the Johns Hopkins University, where she studies with Felipe Lara. She received her M.M. in composition from the Peabody Conservatory and B.M. from Ewha Womans University.