Hello!

Do bard songs in this version of the game get the +1 bonus? The in game description and the manual don't mention it.

Yes, they do.

"In EE version 2.0+, Bard song of the same type no longer stacks, and all songs break invisibility, but the patch does give unkitted normal bard song a +1 Luck bonus to allies who hear them at Bard level 1, +2 at level 15, and +3 at level 20"

Source:http://baldursgate.wikia.com/wiki/Bard

Thanks for the info.