Parsed the list down to the official 60. Nokoru Natsu ni Hanataba o seems to be another song that's gone now, like See the Lights and America. Darn licensing.
No idea, but it would be pretty neat if there were. 60 songs + DLC is already kind of ridiculous.
Are there any hidden songs that aren't on the main site or select page that unlock?
No idea, but it would be pretty neat if there were. 60 songs + DLC is already kind of ridiculous.