The melody of American Boy by Estelle featuring Kanye West runs 466 notes across 67 bars, 4:19 long in Am at 115 beats per minute. The tab sits almost entirely in the first two frets, one note at a time — no chords to barre and no strumming pattern to keep up with. A piano backing track plays the chords and bass underneath, so the line you are learning sounds like the record even at half speed.
Prefer to strum and sing it instead? American Boy chords and lyrics.