Listen to Supercalifragilisticexpialidocious online. Supercalifragilisticexpialidocious is an English language song and is sung by Dick Van Dyke and Julie Andrews. Supercalifragilisticexpialidocious, from the album Mary Poppins Original Soundtrack (English Version), was released in the year 2014. The duration of the song is 2:00. Download English songs online from JioSaavn.