I call these my "Dueling Harmonies." I added these dolls to my collection approximately 10 years ago. Made by Ideal in 1972. Neither have their original guitar and amplifier. The doll on the left has her original sandals, and the velvet cuffs at her wrists are bluish-purple, while the cuffs on the doll on the right are burgundy. The doll on the right is missing her shoes. These dolls stand well on their own, but you have to put their left legs out further to balance, since one leg is longer than the other so they can be posed in a guitar-playing stance. They have light brown hair with pale blonde streaks. They stand 22 inches tall.
I would love to have a working/singing/dancing Harmony. These may work, but I do not have the guitar, amplifier, and record(s) to test them. Either way, I love their 70's look, large set brown eyes, long dresses, and they are among my favorite dolls.
