Which term describes the exact repeating of a melodic pattern in the same voice, on the same pitch and with the same rhythm?

The term that describes the exact repeating of a melodic pattern in the same voice, on the same pitch and with the same rhythm is "repetition." In music, repetition involves restating a musical idea or motif exactly as it was first presented, allowing it to solidify in the listener's mind and contributing to the overall structure of the piece. This technique is often used to create familiarity and cohesion within the music.

Reiteration typically refers to the act of repeating something, but it does not specify the same exact parameters as repetition does. Variation involves altering aspects of a motif, which goes against the definition provided. A sequence entails the repetition of a motif at different pitch levels, introducing a transformation that changes the original melodic contour. Therefore, repetition is the most accurate term for the scenario described, as it highlights the unchanged nature of the melodic pattern being repeated.