Quote Originally Posted by Ryllharu
Mizuki Nana is really spectacular live on the other hand (plenty of youtube videos around). I think that you can tell she really loves to sing (not too far from her character in White Album).

Hirano has brought a lot to the seiyuu-idol connection, but she owes a lot to the success of the seiyuu before her like Mizuki Nana.
Mizuki Nana is probably a decent deal to have as a voice actor in a series, because they can so easily make her sing professional quality OPs/EDs... In some of those articles depicting the blighted financial situation of seiyuu they separately mentioned that many projects save money by having voice actors sing themes as it costs little compared to licensing songs from "real" musicians.

I was just listening to Mizuki Nana's Basilisk EDs and I have to say she can surely sing excellently.