Many fans of Siobhan Magnus say she reminds them of Linda Ronstadt. If fact, I've been wanting Siobhan to sing "Blue Bayou" just to see how much she would sound like Linda. But the two actually have a song in common, and it's not one you would expect. It's a song called "Poor Wandering One" from the Gilbert and Sullivan operetta "The Pirates of Penzance." That's right, two rocker girls singing in an operetta.
First up, it's Linda Ronstadt from around 1980. She skips the high note (Eb6) at the end:
Then it's Siobhan Magnus in 2006 at the age of just 16, walloping the high notes, including the Eb6 at the end: