In my opinion, Floor Jansen is the best female singer in metal because her vocal style is extremely varied: opera, rock, pop, ... very different styles, but anyhow this is no problem for Floor! See (or better: listen) for yourself! :)

The songs:
After Forever - Come*
After Forever - Beautiful Emptiness**
After Forever - Intrinsic***
After Forever - Sins of Idealism**
After Forever - Strong*
After Forever - Face Your Demons*
After Forever - Monolith of Doubt***

*taken from the album "Remagine" (2005)
**taken from the album "Invisible Circles" (2004)
***taken from the album "Decipher" (2001)

About Floor Jansen:
- born on 21st February 1981 in Goirle (the Netherlands)
- singer in "After Forever" since 1997 (when the band still had the name "Apocalypse")