"Poker Face" is a synth-pop song in the key of G minor, following in the footsteps of her previous single "Just Dance", but with a darker musical tone.
The song attained worldwide success, topping the charts in twenty countries including the United States, United Kingdom, Australia, New Zealand, Canada and many European countries.
"Poker Face" is the best-selling single of 2009 worldwide, with over 9.5 million in sales.
It is one of the best-selling singles of all time, having sold over 14 million copies.
It was nominated for both Song of the Year and Record of the Year at the 52nd Grammy Awards, and won the Award for Best Dance Recording.