The melody of A Certain Smile by Johnny Mathis runs 238 notes across 49 bars, 3:32 long in Ab at 86 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? A Certain Smile chords and lyrics.