An interesting minor soul performer, Mason initially focused on songwriting when she entered the music business in her teens. As a performer, though, she had a huge hit in 1965 with her self-penned "Yes, I'm Ready" (number five pop, number two R&B), a fetching soul-pop confection that spotlighted her high, girlish vocals. One of the first examples of the sweet, lush sound that came to be called Philly soul, she had modest success throughout the rest of the decade on the small Arctic label