The melody of California Gurls by Katy Perry featuring Snoop Dogg runs 506 notes across 66 bars, 3:26 long in Bb at 123 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? California Gurls chords and lyrics.