Ecco qui
Hyperbole? Moi? I resemble that remark! smile Anyway, to my ears, the differences are clear within the first few measures and it is not just a matter of phrasing and dynamics but actual pitch differences. Have a look at the bass line in measures 5 and 6 below. In version 4a the fourth note in the second group of eighth notes is a G#. In the Fontana version it's an E. When I played the first version it sounded like an error to me because I was used to hearing the E.
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