, released singles or not, they not are official singles. The format of the tables of artists discography: "as lead artist" are singles with music video, and the others are in other section, because not are official singles. Is like the format: 'song featuring. artist name.' The name song is up and the "feauturing" is small down of the name song. Catch the idea?. Example: Swift's superman song are released single but not have music video, this should in other section, this format is applied to all artist discographies. Also, the songs are released to promote the Grande's Ep every tuesdays.