I looked at my bard again and remembered that all you need in order to never miss a note again is maxed instrument/singing skills AND only 2 points in internal metronome. There, I saved you a few AA points.
The bard is great at running through a dungeon past trash so you can summon your group at a far away boss. Sing a movement speed song(indoor or outdoor), get fading memories ready, get your invulnerability song ready, and run! Spam fading memories when you want to clear aggro. If you want to save some mana you can click your coh orb while running with yourself targeted and you'll clear aggro once the orb casts.
The AA's that improve singing or instrument effects don't do anything if you already have a 2.0.