Final answer:
The leading innovator and choreographer who created synchronized moves for Motown singers was Michael Bennett, known for his work on the musical A Chorus Line.
Step-by-step explanation:
The leading innovator and choreographer who created synchronized moves for Motown singers to express the concept of the song and liven up the performance was Michael Bennett. He was a director and choreographer who worked on the groundbreaking musical A Chorus Line in 1975. Bennett gathered a group of dancers to discuss their lives and work, and used their stories to create a documentary-style musical that revolutionized the genre.