Control Alexa using API

Hello,
I have an idea to make playlists on Alexa amazon and integrate it with KNX system using API(http request) . So this way I can use Alexa as my audio controller and run playlists on my scenes from KNX controllers. This will be so cost effective since all Audio controlling on KNX system is very expensive. I was wondering if any of you guys have had tried this before or can help me about this.