As far as featured tracks go, I must say since 2/11 she has been on a slew of songs from gospel to pop to EDM and back again. I genuinely appreciate all of it, and it's the reason why I never understood how anyone could say she doesn't care about music anymore or isn't trying. Lullaby is actually the 4th music video since 2/11 she's been in. 3 of those being by herself. If you count ones where only her vocals were in, this is actually her 6th.
Whether one likes the work she put out is something different. Personally, the Chris B./Walls Group/Mystery Skulls combo was my favorite. Lullaby is simply flawless! It's been on repeat non stop. Also her renditions of the Chicago songs were amazing and it's unfortunate something wasn't released for that.
My only criticism is that every song has a moody feel. I don't equate moody to boring but I feel it's setting her up. I love badlands and easy listening but she's forcing me to want up beat music for her album. Which honestly I'm never really checking for from her, but that's how she's moving my ear.