Always on My Mind by Willie Nelson is played in the key of F at a intermediate difficulty level, originally released in the 1980s. It uses 4 chords — F Dm Bb C — arranged in the I-vi-IV-V progression.
About the I-vi-IV-V progression
The I-vi-IV-V progression is the classic 1950s "doo-wop" pattern. From home, it moves to the relative minor, then through the subdominant to the dominant, creating a gentle rocking-chair feel that defined early rock and roll harmony. Countless doo-wop, oldies, and pop ballads use this shape.
Playing in the key of F
F major is a stretch for beginners. The F chord itself needs a barre or partial shape, and Bb (the IV chord) is a full barre. Many players capo the 3rd fret and use D-major shapes to make this key easier.
Related songs
More songs in the key of F
More songs using the I-vi-IV-V progression
Learn to play Always on My Mind by Willie Nelson on guitar. It sits in the key of F and uses the I-vi-IV-V progression with the chords F Dm Bb C.