The melody of If I Only Had A Heart from The Wizard Of Oz by Harold Arlen runs 154 notes across 25 bars, 1:12 long in Ab at 165 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? If I Only Had A Heart from The Wizard Of Oz chords and lyrics.