The melody of Somebody by Lemonade Mouth (Movie) runs 326 notes across 33 bars, 3:01 long in G at 82 beats per minute. The tab sits moving up the neck in places, 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? Somebody chords and lyrics.