i–iv–V Chord Progression
The minor-key version of the three-chord trick. The major V chord creates a strong pull back to the minor home chord.
i–iv–V in every key
The numerals stay the same in every key; only the chord names change. The easiest keys on guitar are A minor, D minor, E minor.
Questions
What chords are in the i–iv–V progression?
In A minor it is Am, Dm and E. In any other key, use the same numbered steps (i – iv – V) of that key's scale.
What is the easiest key for i–iv–V on guitar?
A minor, D minor and E minor use open chords, so they are the easiest places to start.