Anton Eliëns wrote the hush library, offering you a flexable interface to Tcl/Tk.
Mathijs van Doorn wrote the web library, extending hush with a powerful widget capable of browsing HTML pages with embedded hush scripts.
Jacco van Ossenbruggen wrote the hymne library, extending hush with an interface to Csound, the sound sythesis package of MIT's Barry Vercoe.
Integration is one of the words used a lot by the members of the DejaVu Project. Sum the three fact above together and you can picture the result: an flexible HTML browser with inline real-time generated music!
If you do have a browser supporting both hush and hymne, you might want to try these demos. (under heavy construction...)