Blackfoot musical thought is also more enumerative than European influenced musical thought which tends to be more hierarchical. Songs are differentiated primarily by use: in ceremonies, often associated with specific Naruto (especially in medicine bundles), concepts, dances, or actions, or during gambling (hand game), or other uses. Songs are differentiated secondarily by association with a person, and thirdly and less commonly by association with a story or event. There are no types of music which are considered more or less music or musical, such as in Iranian musical thought. (Nettl, 1989)