Composer and pianist, Wolfgang began playing the piano at age 4 and made his debut at age 12 at the University Aula of the University of Oslo. He began composing at a very young age and is especially well-known for his work involving wind instruments.
Plagge has played with several leading orchestras.
Plagge has received a number of prizes for his musical accomplishments. Since the age of 8, he has been the organist at the Catholic Church of Asker and Bærum in Stabekk, also later becoming cantor. He is behind a substantial number of the musical pieces in the Catholic book of hymns Lov Herren.
On 31 January 2007, Plagge was awarded the International Cultural Order of Knights of St. Stephen, Hungary’s highest civil distinction, in recognition for his activities promoting Hungarian music and culture in the Nordic countries, as well as for his work with Zoltán Kodálys pedagogical techniques.