Letting you see the entire thing online just makes piracy easier. It's not like flipping through a book in a bookstore where if you nick it or start making copies a clerk will come and catch you.
But I agree that I'd hate to buy music, whether in sheet or sound form, without some kind of preview. books too, and a lot of other things, for that matter.
I just assumed the big blackouts in the middle of each page would print as well. No one would want to use that or go to the trouble to transcribe from the videos. It's more than an incipit but not the entire thing--excellent idea, just like Google books.
It would great if the CMAA could commission Kevin Allen to compose a polyphonic Ordinary setting, to be published in the commons and for free download on this site.
I would donate to that project.
But only if the finished product was formatted to avoid page turns.
Buying music sight unseen has meant buying many a "pig in a poke" in my career as a harpist. However, my best music vendor now features a generous sample of each book online. You can't print it, but it's just enough to ascertain the level of the music and the arranging style. All my purchasing has moved to this site.
With choral music, if I can't see it all, I particularly look for one piece of information - range. Who wants music that the sopranos can't sing and the basses will make wretched growling sounds over? "Not I, said the fly." Put that at the very beginning or indicate it in the description and chances are good that I'll give the piece the once-over.
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