The singular chord is a powerful thing in rock music, and these are the songs where it's used to the most effect.

One of the great things about lo-fi is you ... you’ll see the lowest note now moves downwards as the chords play, creating a more flowing progression. 4. We can further develop each triad ...

Using MIDI over USB, it plays the I-V-vi-IV progression in any key. It plays in chord mode, arpeggiated mode, or mixed mode at any sensible tempo. You can check out a video of the 4chord playing ...