Even more interesting is what the turntable.fm site said back in January: https://web.archive.org/web/20210118082936/https://turntable...
tl;dr Lots of startup drama
Pebbles [1] was a JavaScript library written by Joe Perla.
It was the first time I’d seen a pjax like library and was as fascinated with it as I was turntable.fm.