This shows a popular chord progression: I-vi-IV-V. Each keybed shows the notes of these chords. The chord inversions have been chosen to minimise the finger movement between each chord. This makes the left-hand chord movements easier. The final keybed highlights the full scale of the first chord in the progression, giving you the information you need to play a melody in the right hand.
Experiment with the Progression Controls. The Reverse Progression option can have surprising results, giving you a quick, interesting alternative for your practice and learning.