i'd like to visualize a song with processing. the "video" im going to make should be nearly perfect synchronous to the music. so i need functions to get some control over the time.

what sort of commands are there?

delay();
//did only work one time, i couldn't use the command multiple. only worked the first time

try {Thread.currentThread().sleep(100);}catch (InterruptedException e) {}
// stops the whole thing at start, then same with as delay();

example:

wO(x,y,w,h,a,c); // draw something
.... wait ONE second
wU(x,y,w,h,a,c); // draw something
.... wait ONE second
sL(x,y,w,h,a,c); // draw something
.... wait TWO seconds
.....