A member of the Saarländisches Staatstheater from 2017, he is capable of performing tenor roles with a high tessitura such as Arnold in Rossini's Guillaume Tell.
[4] In 2019, he performed as Arnold again at the Tiroler Festspiele Erl [de], an Austrian opera festival, conducted by Michael Güttler.
[6] In the 2022/23 season, Song portrayed the Prince in Dvořák's Rusalka at the Komische Oper Berlin, directed by Barrie Kosky.
[2] In 2016, Song took part in a radio production of Bayerischer Rundfunk of Rossini's Stabat Mater with the Bamberger Symphoniker conducted by Alain Altinoglu.
[7] In 2018, he sang in performances of Verdi's Messa da Requiem; Kent Nagano conducted both at the Rheingau Musik Festival[8] and at the Herkulessaal of the Residenz in Munich in memory of Enoch zu Guttenberg.