Before the update bard could have automatic recast on any song inside abyssea using Atma of the Blighted Breath and Atma of Camraderie. This is still true for every song except Lullaby. I've tested adding or taking away other forms of haste, I.E. Bard Merit 5/5 Lullaby Recast -5 seconds, Spell:Haste, Atma of Merciless Matriarch, Recast Delay-4, Haste 4% equipment. Lullaby recast for any of the 4 songs is 11 seconds now and cannot be lower. I believe this is a bug, I have not seen any mention of this being on purpose.