When was the song "Poker Face" by Lady Gaga released?

"Poker Face" is a song by American singer Lady Gaga from her debut studio album, The Fame (2008). It was released on September 26, 2008, as the album's second single.

"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 main idea behind the song is bisexuality and was a tribute by Gaga to her rock and roll boyfriends.

The song's lyrics feature various sexual innuendos. "Poker Face" was acclaimed by most critics, who praised the song's robotic hook and chorus.

The song attained worldwide success, topping the charts in 20 countries including the United States, the 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 that year. It is one of the best-selling singles of all time, having sold over 14 million copies. The accompanying music video for the song portrays Gaga singing it in various costumes and playing strip poker in a getaway villa.