In JC, the components of some out of the two-part written chords in the R.H. are linked with an additional stem. It is entirely clear in the case of the chords on the 2nd beat of bars 1-3 and the last chord in bar 5; the notation of the chords on the 2nd beat of bars 5-6 is less precise. It is hard to determine if it corresponds to the notation of [AI], yet such a possibility cannot be excluded. Assuming a possible authenticity of this notation, there arises a problem of its interpretation: in the case of chords on the 2nd beat of the bar, a common stem may indicate an incorporation of the lower note of the third to the 1st quaver of the lower voice or, on the contrary, an extension of the 1st quaver. In the editions, there are no traces of this notation detail.
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notation: Rhythm