Park started working as an in-house lyricist for Music Cube while he was still attending Dongguk University for creative writing (now merged with the Korean Literature program Archived 2014-07-08 at the Wayback Machine).
[6] Park also adapted, translated, and wrote Korean lyrics for the Musical Carmen in December 2013, which opened at LG Art Center.
[13] Additionally, the English-language version of Maybe Happy Ending received the prestigious 2017 Richard Rodgers Award from the American Academy of Arts and Letters.
[15] In 2020, Maybe Happy Ending had its highly anticipated American premiere at the Alliance Theatre in Atlanta, running from January 18 to February 16.
It is inspired by the life of Lee In-seon, a doctor and tenor who holds a significant place in Korean opera history.