This recording was made in May 2017 on the Chrome browser, using the Flashback Pro 5 screen recorder.
It demonstrates how a section of Study 2 can be played at different speeds, and with various track combinations turned off.
This online rendering of the recording is not very good. The video can be viewed better by downloading it (button at the bottom right)
and displaying it in a desktop application such as the Windows Media Player.
The original recording is larger, the background colour is white and the rendering is as sharp as on the original screen.
The current version of the Assistant Performer application can be found
here. See also: about Study 2.