Roy will play a melody in triple meter and place the pulse of the meter on the first beat. Chuck will play the triple meter melody and place the pulse of the meter on the third beat. Who is playing the melody with the correct pulse

Roy will play the melody with a correct pulse. This meter is common in dances, such as waltzes, minuets and mazurkas, where the all three meters are danced as one movement starting from the first beat. Although in some kinds of music (for example, jazz improvisations) musicians may place the pulse on the second or third beats, the classical and more natural way to play it is placing the pulse on the first beat.