In 2009, the music scene was dominated by hits from artists like Lady Gaga, Black Eyed Peas, and Beyoncé. Lady Gaga's "Poker Face" and "Bad Romance" were chart-topping singles that showcased her unique style and vocal prowess. Black Eyed Peas' "Boom Boom Pow" and "I Gotta Feeling" were infectious dance tracks that became anthems of the year, while Beyoncé's empowering ballad "Halo" struck a chord with audiences worldwide. These hits defined the sound of 2009 and continue to be celebrated for their lasting impact on pop music.