Right you are.
I want to compare the pitch of the same sentence said by different people to look at the kinds of differences between genders, accents, and just inter-speaker in general.
So I think of a simple sentence and ask them to repeat the sentence as declarative, question, and command. Make me a sandwhich/Make _me_ a sandwhich? / Make me a sandwich!!!
Seems like a fun illustration of prosody, right?
:/