Amami-sama recommended Fukuhara because the cast members will be involved in a lot of singing and dancing and she was very impressed by Fukuhara's singing ability after watching her performance (the one where she sings in a church in LA around the time of her debut) on TV.
When asked whether she'd continue as an actress, Miho answered "I don't think so. This time they needed singers in the cast. When they asked me to take part in the drama, they told me their thoughts to 'use music to bring up the spirit in Japan after the 311 earthquake and to cheer people up after seeing this drama.' I personally wanted to contribute, even just a little bit, to this energy through this drama, and so I decided to take on the role."
Drama will air every Thursday 10pm starting April 12!!!
Miho's official website
News source #1
News source #2
LOL English name of the drama is Princess of the Frog? Interesting.... and OMG now that I looked into it I realized Tamayama Tetsuji♥ and Koizumi Koutaro are in it too! 'tis a season with promising dramas!
p.s. Sorry the translation was done entirely by me so ummm... yeah it's gonna suck a bit. Feel free to add to it :)