Answer:
instrumental backing
EXPLANATION:
The Funk Brothers were a group of Detroit-based session musicians who performed the backing to most Motown recordings from 1959 until the company moved to Los Angeles in 1972.
Reference:
Ryan, Jack (2016). Recollections, the Detroit Years: The Motown Sound by the People who Made it. Glendower Media. p. 102. ISBN 978-0914303190.
