Harpsichord (authentic) soundfont and free player
Because the soundfont is too large to upload here.. visit the above link to locate and download the harpsichord soundfont
Play with Sforzando soundfont player which is also freely available at https://www.plogue.com/downloads.html
They recommend that this soundfont is played with no velocity sensitivity so move your curve to the top to make a flat line at maximum.
Sforzando is indeed free, but that does not give us the right to distribute it from this site. I have updated your post to include a link to Plogue's downloads page instead.
The same consideration applies for the sound font. Posting a link is not a copyright violation; posting a copy of the file IS.
In future, please post only links, to avoid exposing PlugInGuru to potential legal issues.