Wow, I have to admit, I'm impressed. Wasn't really expecting all that much but some of these abilities sound quite amazing. Could theoretically add new depth into jobs and really up the fun factor.
Nightengale- Halves the cast and recast time of songs
Troubador- Increases the casting time of a song to 1.5 and doubles the effect.
Those sound pretty awesome, finally a couple /ja for Brd. Depending on the recast Nightengale could be handy or not, good in a pinch or perhaps on kited mobs to get that one song on the kiter with more ease. Troubador sounds pretty awesome though, could be great on certain HNMs when you have plenty of time to sing a song so you can go ahead and pop this on and there we go, insta-soul voice.