[3] He collaborated with various artists including Park Jiha, Lowdown 30, Hippy Was Gipsy, Say Sue Me, and Bek Hyunjin.

[6] Kim Oki was a former breakdancer and a backup dancer to Sechs Kies.

[7] He debuted in 2013 with his first studio album Cherubim's Wrath (천사의 분노), which he once said was inspired by a Jo Sehui's novel "The Dwarf.

"[8] He won Best Jazz & Crossover Performance at the 2014 Korean Music Awards.

[12] Park Sangjoon of Music Y described the album as "Kim Oki's music sufficiently sheds light on certain poor lives, and certain lives that are mean and always prepared, even if he is not poor.