Bláthnaid Conroy Murphy was born in Dublin, Ireland and first worked with The Wiggles in late 2010. She was originally in an Irish choir called Anúna. She not only plays the bass, drums, piano and glockenspiel but does the singing voice of Dorothy the Dinosaur, as well.
Blathnaid in Anuna
Blathnaid singing "Twinkle, Twinkle Little Star"
Blathnaid and Brad
Blathnaid and Simon Pryce
Blathnaid in "MIsa Criola" music video
Blathnaid's name for Dorothy's voice in "Ukulele Baby!" end credits
Blathnaid's name for Dorothy the Dinosaur in "The Wiggles' Big Birthday!" end credits