When talking about his Contra Sonic experience, Perry had several compliments for the resident dJ improper: "I think that Jeremiah does a great job in making it not too different for callers. As you know, he takes the techno music and makes it square for contra dances. The fact that Jeremiah knows contra and knows what it takes to make music for contra dancing is very important for this dance. Unlike some of the other callers, I did not meet with him until about 1 hour before the dance. He likes to go over what the music is like with the caller -- especially the intro beats that we call 'potatoes.' The 4 intro beats in a regular contra sound completely different than a Contra Sonic. In a regular contra, one instrument, say a fiddle or a piano, plays 4 beats, then the whole band starts their tune. In a Sonic, the 4 (or 8) beats are unrecognizable oftentimes from the main tune -- and he counts down with you so you know when it's time to start calling."
Perry continues, "In many ways the Sonic is easier calling -- you don't have to tell anyone when you want to stop -- you stop when the music is finished. In a regular contra the band will play forever until you tell them it's time to stop."