The haunting verse to John Lennon's Imagine is based on a simple alternation between the 1 chord and the 4 chord, exactly as we study in IFR Jam Tracks Level 2: Pure Harmony Essentials. Later, the chorus includes the surprising movement from 3D to 4 which we study in IFR Jam Tracks Level 4: Mixed Harmony Essentials.
Where do we study these chords?
Every single one of the chords to this song is covered in the IFR Jam Tracks series. Just working through this series will give you the ability to improvise beautiful, melodic solos over this song and many others. To master all of the chord concepts that appear in this song, you'll need the following levels of the IFR Jam Tracks series: