#1:
  • Bard 10 (gives inspire courage +2)
  • Song of the heart feat (+1 to inspire courage, total +3)
  • Badge of Valor (item, MiC) (+1 to IC, total +4)
  • Inspirational Boost (spell, SpC) (another +1, total +5)
  • Words of Creation (feat Book of exalted cheese) (doubles IC bonus, total +10)

#2 The same but also grab
  • Dragonfire inspiration trasnform that +10 to hit and damage to +10d6 fire damage
  • Draconic heritage (battle dragon) transforms +10d6 fire damage to +10d6 sonic damage


#3,4,5,6 - whatever you want ;) they get +10 to hit +10 to damage +10d6 sonic damage on every attack after #1&2 start singing.