So, first the page comes up with an empty box, then you wait a second, and boom: the content comes in.

It involved a series of black letters presented in the centre of a white screen. Each letter was shown for half a second and followed by a blank screen for two seconds before the next letter appeared.

Sound: play open strings alone; play slow scales, sustaining a 20- to 30-second bow; practice everything in the lower or upper half; or watch your contact point in the mirror.