Knee Deep by Zac Brown Band is in Ab at 160 beats per minute and runs 3:18 across 80 bars. It uses 6 chords — Eb, Ab, Bb, Cm, Eb7, F7. The chord diagram changes as the song plays and the words light up as they are sung, so you can strum and sing along without reading ahead.
Want the melody line note by note? Knee Deep guitar melody tab.