Scottish producer/DJ Hudson Mohawke record an untitled demo with Littlebabyangel in the hopes Rihanna would use it for ANTi. Unfortunately, she passed. Reports claimed neither Riri nor her camp ever even heard the tune. Instead, as Pitchfork points out, it was re-imagined for "Crisis" from Anohni’s HudMo-co-produced LP HOPELESSNESS.
IF Rihanna heard the demo, we can imagine why she'd leave it off ANTi.
Check out the demo version then where it resides in “Crisis” below: