Re: Melodies move by step in any form of music?

> As far as the lower limitation is concerned, I would argue that there is
a 
> large body of music employing pentatonic scales - but not anything
smaller. 
> So if you can show the 4 tone (especially o7) music, I would revise that

> opinion.

Read some of the ethnomusicology literature.  The vast majority of
human cultures have used scales with less notes, and virtually all
children's songs from anywhere in the world still do so today.  (I
have a few Scottish examples in my modes tutorial - their origins
are all unexplained, but it seems a good bet that some are very old).

Nor are most of these "oligotonic" scales subsets of any of the
common pentatonic ones; historically they are usually neither
degenerate nor ancestral forms.

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