Baritone Kihun Yoon, a native of Seoul, South Korea, was a member of LA Opera's Domingo-Colburn-Stein Young Artist Program from 2013 to 2017.

His many appearances with the company have included the leading roles of Sharpless in Madama Butterfly and Scarpia in Tosca. Since the 2017/18 season, he has been an ensemble member of the Oldenburgisches Staatstheater. His appearances in Oldenburg for the 2018/19 season include Alberich in Siegfried, Mephistopheles in La Damnation de Faust, Enrico in Lucia di Lammermoor and the leading role of Joseph De Rocher in Jake Heggie's Dead Man Walking. During the 2017/18 season, he appeared there in the title role of Rigoletto and as Miecznik in Roman Statkowski's Maria.

In 2014, he made his Los Angeles Philharmonic debut under the baton of Gustavo Dudamel, as a soloist in Beethoven's Choral Fantasy. In 2015, he performed several roles in the U.S. premiere of Unsuk Chin's Alice in Wonderland with the Los Angeles Philharmonic. That same year, he performed Figaro in Giovanni Paisiello's 1782 The Barber of Seville, under the baton of James Conlon with the USC Thornton School of Music Orchestra. In 2016, he was featured as Delirio in the U.S. premiere of Florian Gassmann's 1769 comedy L'Opera Seria at Wolf Trap Opera. In 2014, he made his role debut as Escamillo in Carmen with the Aspen Opera Theater.