The melody of The Merry Old Land Of Oz by Harold Arlen runs 332 notes across 46 bars, 1:41 long in Ab at 112 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? The Merry Old Land Of Oz chords and lyrics.