The melody of I Will Wait by Mumford & Sons runs 264 notes across 73 bars, 4:31 long in Gb at 130 beats per minute. The tab sits low on the neck, mostly under the fourth fret, 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? I Will Wait chords and lyrics.