The melody of 1 + 1 by Beyoncé runs 324 notes across 33 bars, 3:55 long in G at 69 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? 1 + 1 chords and lyrics.