I want to create multiple track playlist editor

Questions
,
1

I want to create multiple track playlist editor which can run audio together or next to another like this in the link http://naomiaro.github.io/waveform-playlist/web-audio-editor.html
How can i create this in three.js ?

2

Have you seen this example? It’s probably a good place to start.

https://threejs.org/examples/#misc_animation_authoring