The melody of I Know Who I Am by Israel Houghton runs 405 notes across 107 bars, 4:54 long in A at 128 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? I Know Who I Am chords and lyrics.