The objective of this study is to tease apart the timing of lip movements associated with initial consonants and tongue movements associated with vowels. It is usually assumed that all tongue and lip movements within a spoken syllable are planned and coordinated in advance, and that physical articulation of initial consonants and nuclear vowels is started simultaneously. However, emerging evidence suggests that at least some movements can be controlled independently in real-time (Kawamoto et al., 1998; Krause & Kawamoto, 2020). The key research question is how this timing is affected by giving a speaker advanced knowledge of consonants or vowels before giving them the whole word to say. In this in-process study, participants wear the Micro Speech Research Ultrasound headset that has an ultrasound probe to capture tongue movements, a camera to track lip movements, and a microphone to record their auditory responses. Participants read aloud monosyllabic consonant-vowel-consonant words, preceded by overt unmasked primes. Primes are neutral (e.g., “_ _ _”) or signal the initial consonant (e.g., “P _ _”) or vowel (e.g., “_ A _”). Preliminary data will be reported. If speakers can independently control these movements inside the same syllable, assumptions common to most theories of motor speech will require re-evaluation.