Yes. During the Challenges use:

  • “X” to switch between the shown and hidden patch
  • “Space Bar” to start/stop playback
  • “Right Arrow” to trigger the Submit/Next button
And in both the Challenges and in the Standalone Synth use:

  • "V" to toggle the Visualizer
  • The row of keys that start with "A" to play the keyboard's white keys
  • The row of keys that start with "Q" to play the keyboard's black keys
  • The number row to set the range of the keyboard