The melody of I Gotta Feeling by The Black Eyed Peas runs 727 notes across 110 bars, 4:43 long in G at 130 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? I Gotta Feeling chords and lyrics.