A choir refers to a group of singers who perform together, usually in multiple parts or harmonies. It is traditionally associated with classical, religious, and choral music. In the context of the clue, "starting point for many soul singers," it could be referring to a church choir or a gospel choir, as these are often where many soul singers begin their musical journey.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: "Hallelujah!" singers. Explanations are generated by AI and may be inaccurate.