vi-IV-I-V

In the key of C major, the vi-IV-I-V chord progression would consist of the following chords:

vi - A minor (A-C-E) IV - F major (F-A-C) I - C major (C-E-G) V - G major (G-B-D)

So the chord progression would be Am-F-C-G. This chord progression is also quite common and is often used in pop, rock, and folk music. It is a versatile progression that can be used in a variety of tempos and styles, and is often used as the basis for simple and catchy melodies.

With your Woovebox' song key and scale in C major (which is the default) and the chord track's upper 8 keys in diatonic mode ("diat", also default). You can press the 2/bs for A minor, 8/Pc for F major, 5/ki key for C major, and 1/Cd for G major.