 In some instances, the melody combines elements of both; for instance, the early Estonian and Pomeranian versions are closer to today's "Swiss" tune, while further west the "German" tune seems to have prevailed from the start.Most of the older versions exhibit a more complex harmonic and rhythmic structure than the extant two tunes, though; some demanded a triadic arpeggio or other more complex chords at some points, others covered wider intervals.The gradual simplification of the melody may be due to the fact that it is after all a children's song; it may have been altered for pedagogical purposes, i.e.