The melody of Cry Me A River by Justin Timberlake runs 567 notes across 46 bars, 4:25 long in B at 76 beats per minute. The tab sits moving up the neck in places, 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? Cry Me A River chords and lyrics.