OK Plugh, I will bite. How precisely does this weapon help a bard to haste her/his party. An instrument bonus does not in any way affect the haste or slow percentage on a song. As such, this instrument does nothing to make 80% haste possible.
However, that is not to say that a bard cannot haste a group to 80% or more at lvl60. For example the epic proc (55%) plus warsong of vah shir (25% stacking; ignores haste cap) would provide 80% haste. Adding composition of ervaj (10% stacking) would make this 90% but generally would not be worth it.
My apologies to non-bards for this post. I wouldn't ordinarily post something like this on an item but there is so much misinformation about I feel it only right to correct this idea.
(-: Zel :-)

