AC Sapphire is American singer-songwriter Annachristie Marie Sadler (born 16 July 1985) based in Portland, Oregon. She debuted with the self-released album Elixir for the Human Heart (2005). She formed the group Sisters 3 with her siblings Beatrice and Cassandra Sadler, which released two albums and found success in the Philadelphia music scene. After Sisters3 dissolved, Sapphire moved to the Mojave Desert and re-established her solo career with the EP Sibling Rivalry (2015). Read more on