Sven-Olof Walldoff

Sven-Olof Walldoff (May 2, 1929 – June 7, 2011) was a Swedish record producer, composer and orchestra conductor who is best known for conducting the orchestra for ABBA's song "Waterloo" for the Eurovision Song Contest 1974, wearing a Napoleon costume. Walldoff also collaborated on ABBA's first album Ring Ring.