Many games have put synergies for using both a dancer and bard at the same time in an XP party, giving "super buffs" for using the proper song/dance combo.
I wouldn't be surprised to see this come to life in FF11, since team-work (skill chain, magic burst) have always been core of the game, even though the community works really hard at ignoring it.
In any case, my first 75 was Bard, and you can bet that once WoTG comes out, my first 75 post-release will be Dancer, even if I have to solo all of it. ^_^
FFXIV: Cloe Delisle
Scholar, officer of the SWAGGER Free company, Sargatanas server.