Which artist who released the album "Hello, I'm Dolly" has collaborated with Kathy Mattea?
Kathy Mattea:  She has collaborated with Dolly Parton, Michael McDonald, Tim O'Brien, and her longtime husband, Jon Vezner. Dolly Parton:  After achieving success as a songwriter for others, Dolly Parton made her album debut in 1967, with her album "Hello, I'm Dolly".
Dolly Parton