"We are H.A.P.P.Y" is a well-known Nigerian marching song. It is a rhythmic, spirited piece typically performed during parades, school march-pasts, and organised group movements. The song's steady, regular beat and march-like tempo make it suitable for synchronised walking or marching.
A marching song has a strong, regular pulse (usually in duple or quadruple time) that allows a group to move in step together. "We are H.A.P.P.Y" fits this description with its energetic, repetitive structure designed to keep participants in rhythm as they march.
An art song is a formal vocal composition for solo voice and piano, usually setting a poem to music. A praise song is used primarily for worship or to honour someone. A work song accompanies manual labour and helps coordinate physical effort. The rhythmic and functional character of "We are H.A.P.P.Y" aligns it with the marching song category.