Morphing with only white keys leaves only two places to do it on the keyboard. One is between B and C. The other is between E and F. The limitation of using no black keys was challenging. I explored various chords that can be used in white key morphing.
The rest of the story:
The result is what you are hearing. It starts in Aeolian, moves to Ionian, then returns to Aeolian. I used rainy pictures for Aeolian and sunny pictures for Ionian. I thought of a rainy day first. My wife suggested a lullaby. The title is a blend of both ideas.