After 90 min: You can play a complete recognizable song from start to finish on piano.
Play Chord Progressions Like a Musician
After 90 min: You can play the I-IV-V-I progression smoothly and use it to accompany simple melodies.
What you need
The 90-Minute Plan
Learn C major (C-E-G), F major (F-A-C), and G major (G-B-D) using root position. Play each chord with all three fingers together. Hold each chord for 4 beats, listening to the sound.
Play: C major (4 beats), F major (4 beats), G major (4 beats), C major (4 beats). Move smoothly between chords without stopping the rhythm. Repeat this 12-bar pattern 8 times slowly.
Instead of just holding chords, play a quarter-note rhythm on each chord: down-down-down-down for 4 beats per chord. Keep the left hand's steady pulse while right hand plays the rhythm.
While playing the C-F-G-C progression in left hand, add a simple melody in right hand (like notes from each chord). Practice staying in sync—the left hand is the heartbeat.
Play the progression 3 times at tempo. On the 4th repetition, hold C for 8 beats instead of 4 to resolve. Play it again with slightly different rhythm. You've got the foundation of countless songs.
90% of pop and folk songs use some variation of this progression—master it and you unlock decades of music.
You might also try
After 90 min: You can play the C major scale smoothly in both hands at 120 bpm without mistakes.
After 90 min: You can play Em, Am, D, and G chords cleanly and strum along while singing a full song.
After 90 min: You can play F major barre chord cleanly and use it in progressions without your hand cramping.