Betty Kelley is an American singer best known for her work with the popular Motown group Martha and the Vandellas. She joined the group in the mid-1960s, contributing her powerful vocals to several hit songs. Kelley was part of the ensemble during a time when the group was gaining significant popularity. After leaving Martha and the Vandellas, Betty Kelley pursued a solo career and continued to perform. She is recognized for her contributions to the Motown sound, which played a crucial role in shaping the music industry during the 1960s and beyond. Her work remains influential in the realm of soul and R&B music.