Oki performs frequently in Japan, and he has also taken part in a number of folk music festivals in other countries. In 2006, he released the album Kíla & Oki with the Irish band, Kíla. His earlier solo albums include collaborations with the female Ainu singing group Marewrew, who sometimes appear in his live show as well. More recently, he has played with his own Oki Dub Ainu Band, which plays mostly traditional Ainu songs in an electric style which mixes dub rhythms with tonkori playing. During live concerts, he either plays with the Dub Ainu Band or as a solo acoustic act, singing and playing the tonkori.