When the Saints Go Marching In Pure sheet music for piano and tuba. Often referred to as "The Saints" it's an American gospel hymn that has taken on aspects of folk music as well as a jazz standard. Made popular by Louis Armstrong in particular as well as Fats Domino and (as "The Saint's Rock and Roll") by Bill Haley & His Comets. Jazz arrangement by Lars Christian Lundholm including chords which can be used as lead sheet - score with part