Use the space key to fly, use the arrow keys to change speed, and press "j" to summon a sine whale, the "math whale" from H-Frictions moving in a sine wave. Press "h" to disable gameplay, useful for the fast speeds that seeing the thoughts require.
The first three lines of the Bee Movie script are in the background, so credit to whoever made those lines. Credit to Scratch for providing the original "Bear-a" asset, as it was turned into the Math Whale. Credit to H-Frictions as the music is taken from one of the projects in it.