I was able to chain together Alexa, SmartThings and my wife’s grand piano in under an hour. My wife is starting to like smart things after all…
In case anyone is interested.
The piano has QRS PNOMATION II, which uses servos/actuators to handle the piano portion. This exposes control through a webserver. You normally browse to the IP address of the piano, and it exposes a web-based smart app.
I sniffed the traffic going to the web-server from the smart app, and dropped this into the HTTP GET section of Alexa Helper.