Human Bard 9/Virtuoso 1/Sublime Chord 2/Spelldancer 1/Virtuoso +7
Inspire Greatness + Practiced Spellcaster [Bard] is a mid-level stunt most of the time. In this build, it's useful (even without Words of Creation) through 12th level. At 12th, you can pick up Practiced Spellcaster [Sublime Chord], use Inspire Greatness, and then apply your various spellcasting boosts as so:
Base Bard: 9
Inspire Greatness + Practiced Spellcaster [Bard]: 13
Sublime Chord: 2
Practiced Spellcaster [Sublime Chord]: 6
+ Bard CL: 19
So CL for Bard and Sublime Chord spells is 19 when you have Inspire Greatness up, or 18 when you don't. Then, Song of Arcane Power can boost that to 22 or 23. That will let you cut loose with some nasty black tentacles spells at this level, and Greater Dispel Magic as a 5th-level spell will make sure you knock out any/all Freedom of Movement buffs they might try to throw up.