The melody of I Hate This Part by Pussycat Dolls runs 435 notes across 65 bars, 3:36 long in Bb at 111 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 Hate This Part chords and lyrics.