All bard party is something my friends and i wanted to do, still haven't. Idea involved a lyre of building, all of us with leadership feat with cohorts being groupies and followers being our fan club, and conquering the world with music (and the lyre).
Everyone would go different PrCs to cover different things and play various instruments. One would do Bard/Crusader/Warchanter with Song of the White Raven and IC optimization for be the tank, another would do Sublime Chord and be the main arcanist, another Foch. Lyricist for divine casting, and another Seeker of the Song to...be more bardy, I guess...