The Character Builder does not currently include the feat bonus to attack from Battle Song Expertise to implement powers when using a weaplement (e.g., a sword with any of the various Songblade enchantments).  Is this intentional?  For reference:

Battle Song Expertise

Prerequisite: Bard
Benefit: You gain a +1 feat bonus to attack rolls you make with any weapon with which you have proficiency and with a wand or another item designated as a bard implement (n.b.: a Songblade or Songbow counts as an implement for bard powers). This bonus increases to +2 at 11th level and +3 at 21st level.
    You also gain a +1 feat bonus to the number of squares that you can pull, push, or slide creatures with your bard attacks and bard paragon path attacks.

It's not hard to work around if it's an error with the builder, but that's not the point.