No, Yanni, Forkel was NOT the first biographer of J.S. Bach. (I've already said this twice).
As for your certain statement that ''J.S. Bach was a Koch himself'', we still wait for some evidence of this. The marriage and birth records of the very large musical Bach family in Germany (over many decades) strongly suggest otherwise. For a start. Take a decade or so. But DO tell us - please !
As far as the ubiquitous 'music industry' is concerned they seem to have been amazingly ignorant and disinterested in J.S. Bach until the 19th century. And even then it never features prominently. Care to give us an example of a single Bach concert in Vienna ('city of music') before the 19th century ? Or one in Vienna prior to, say, 1830 ? Or even a concert in which one (even one) of his works was on the concert programme !! Ah, yes, of course, 'Vienna, city of music', yes ?
And when did the music industry arrive ? Let's say around 1800 (with the arrival of the symphony orchestra, music copyright, the arrival of touring conductors, new techniques that would allow rapid commercial publishing of music, the founding of various music journals, the first 'history of music' and various other, increasingly international musical developments). The end of handwritten copies etc. So, by this reckoning, Bach should surely have been firmly on the musical menu by the early 19th century. In places such as Vienna.
And, suprise, surprise ! He is still not there ! Decades pass. And so it goes on. J.N. Forkel 'pulls his hair out'. And is ignored. And meanwhile arrives for the adoration of millions the ghouly trinity (Mozart, Haydn and Beethoven). Now presiding over the 'history of music' as gods of the musical pantheon and a music industry determined to ignore the history of music in Vienna itself (!) during the late 18th century. You really have to laugh at this.
The world loves its own, for sure !!
In the meantime -
http://www.youtube.com/watch?v=yyev_...eature=related