Now return to “Oo-a-lay-lay” from section 2.3 and use the size of your gestures to vary the dynamics of every bar: smaller for the call bars and larger for the response bars. Make sure to indicate the change of dynamics on the last beat of the previous bar i.e. show a smaller upbeat on the 4th beat of bar 1, and a larger upbeat on the 4th beat of bar 2, and so on.