dunno, sorry - but ..... have just discovered lots of coverage on Eurosport (if you are Sky enabled). Reining atm but it says there is live dressage tomorrow.
don't know if I dare say this but I love (good) western stuff - very skillful! They may put terrifying bits in the horses mouth but hardly ever see the reins anything but loose! Shame the FEI doesn't do a cutting-horse comp though - like watching a cat hunting!