I'd ask them. For that to be possible, they would have to have a way to do that written into their page via the location.search of the pages address. If they do, you would just need to include your query in the href:
HTML Code:
<a href="http://www.steveweissmusic.com/?keyword=bach%20sonatas%20and%20partitas%20violin">Search Bach Sonatas and Partitas for Violin</a>
or some similar sort of thing. But, their site would need some mechanism already in place to receive the query to their form.
And, it is just good web manners to ask, they may not like the idea, if they allow it and do have a mechanism for it, they may require a free or paid license for it, etc.
Bookmarks