There are two voices I hear here vis-a-vis Bach:<br>1. Art for art's sake -- the romantic idea<br>2. Art for money's sake -- the distinction of commercial vs commisioned being a fine semantic distinction.<br><br>Bach himself expressed a view however which does not fit in with either:<br>
<i><br>Anything done other than for the service of God is vanity</i><br><br>[I read this 30 years ago and google is not finding me a suitable quote -- sorry if its off the mark]<br><br>