Wonsick Oh is a graduate of the Royal Academy of Music and the Korea National University of Arts. He is an alumnus of the Georg Solti Accademia, a former Alvarez Young Artist at Garsington Opera and Young Artist at the Oxford International Song Festival.

In the current season he understudies the Bass Soloist in The Big Opera Mystery (Opera North). Other appearances include Prince Gremin Eugene Onegin (Hampstead Garden Opera) and Second Prisoner Fidelio, Snug A Midsummer Night’s Dream (Garsington Opera). He has covered roles including Jupiter Platée, Surin The Queen of Spades (Garsington Opera) and Lorenzo I Capuleti e i Montecchi (English Touring Opera).