Scribbletune is demoed and presented at JavaScript meetups (and recently Electronic Music meetups).
Here are a few tracks created with Scribbletune in Live events with their videos:
2019 Aug 1 | GitHub HQ, San Francisco
2019 July 10 | SAE Expression College, San Francisco
2018 Apr 26 | Smarkets HQ, Los Angeles
2017 Jan 5 | Github HQ, San Francisco
2017 July 27 | ForwardJS, San Francisco
2018 Sep 26 | Trading Technologies HQ, Chicago
2016 Sep 23 | PayPal HQ, San Jose
Video