It is called a virtual piano. The examples on the website are very impressive. Presumably you use it on your computer with other music software to create piano music. Maybe your question refers to using the Pianissimo by Acoustica region of a sound card? Virtual Grand Piano | Pianissimo | Acoustica
Popular search engines like Yahoo! (really a directory) or Alta Vista can cost you $20 - $50 on a cost per thousand (CPM) to purchase a minimum number of impressions, usually 100,000. But, you can get special deals through services which we'll touch on later. That means a banner ad on Yahoo! would cost you anywhere between $2,000 to $5,000 per month. That's pretty much comparable to the cost associated with placing an advertisement in a small circulation trade publication.
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