Exercise number 4 is very similar to number 3, except the second part after chorus and notes duration. Indeed in this exercise, notes are half notes instead of quarter notes (which value is 2/4 instead of 4/4). Remember to play twice the part reported with the chorus, finish taking your hands off the keyboard and counting the time during breaks.
Exercise performance is 4 hands and was recorded by Bill and Chris. Please enjoy the video and. .. enjoy studying!