Thats one if the best Alistair impressions i have ever seen.
Then you are either referring to another Alistair or you need a sight test pronto; if the latter, then let's demonstrate why, as such an impression, it falls so far short.
Indeed, being in the rather adavantageous situation of recently having been able "recently" and "having" need to change places
to replace my grand by an other, better grand"another" is one word, not two
with besaid three pedals,"besaid"? - not a word with which I am familiar; may one presume that "the said" or perhaps "the aforesaid" is intended here?
I would highly recommend to take this recommendation into account"would" is superfluous, so is the tautological phraseology and "highly is better substituted with "strongly"
,this comma is superfluous
before you consider tackling the aforementioned miraculous metamorphosis, another superfluous comma
since, whereas scientists might have witnessed actually such metamorphosis every once in a while"actually" should appear between "might" and "have"
among rather seriously interested pianists,interested in what?
I do not know yet"yet" should appear between "not" and "know"
of a documented scientific observation which proved that,the past tense is potentially or actually misleading here, since any such observation would be expected to prove something for all time, so the present tense should therefore have been used instead
after having accomplished this rather complex and challenging task, these pianists would have been able to subjoin additional technical components like pedals to their newly created appearance.leaving aside the question of whether "conjoin" might be better than "subjoin", even in such as world of advanced genetics as one would need to contemplate here it would be impossible either to conjoin or subjoin any such "components" to an "appearance"
per se.
3 out of 10, would you say? Or am I being unduly generous?
Best,
Alistair