Originally a nine-piece group, Jessica departed from the group in September One of the prominent figures of the Korean Wave , the group has earned numerous accolades and the honorific nickname "The Nation's Girl Group" in their home country. The group rose to fame in with the single " Gee ", which claimed the top spot on KBS 's Music Bank for a record-breaking nine consecutive weeks and was Melon 's most popular song of the s decade. Girls' Generation consolidated their popularity in South Korea with follow-up singles " Genie ", " Oh! Their second Korean studio album, Oh! The group ventured into the Japanese music scene in with their eponymous Japanese album , which became the first album by a non-Japanese girl group to be certified million by the RIAJ. An English version of the single " The Boys " was released in an attempt to expand the group's endeavor to the global music scene. Taxi ", and "Oh!

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So how do their singles stack up? Not one of their more melodic tracks, but an important, more hip-hop oriented, shift in their sound. It succeeds more as a spectacle than a song, but what a spectacle it is! Taxi established this sleek dance-pop sound earlier in , but Bad Girl showcased a stronger hook and more effortless melody.
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The group had gained some attention with their debut album, but it was "Gee" that really propelled them to the spotlight! Considered a classic Girls' Generation track, "Genie" gave a spotlight to each group member whilst pushing the group's sound to new and exciting directions. Probably among the group's cutest and catchiest tracks that they've released, "Oh" was a big hit in both Korea and Japan. Exchanging the cuteness for something a bit edgier, "Run Devil Run" was a shift into a new direction concept-wise whilst retaining the group's trademark catchiness. Building on their new edgy concept, "The Boys" was the group's first venture into the hip-hop genre. Not only did it have a new sound compared to their old songs, "The Boys" was also the track that introduced them to American audiences.
While there will hopefully be a lot more music moving forward from them, this seems like the perfect time to take a look back at the past decade through their title tracks. A groovy pop song with a swaying melody and some funk elements, "My Oh My" is an easy-to-listen to tune. With a catchy, yet simplistic early '00s electro-pop melody and the repetition of monosyllabic sounds, "Galaxy Supernova" is an overall fun listening experience that demands to be sung along to. Spunky and quite a bit sassier than many of Girls' Generation's previous tracks, the single uses fantastical metaphors to compare romance with heavenly bodies as the women sing over pulsating synths. Vintage bubblegum pop, "Lion Heart" is a paunchy blend of playful beats and soulful vocals from the women of the group. The lighthearted throwback track placed the individual tones of each of the eight women front and center, showing off their powerfully saccharine vocals. As a special 10th anniversary single, the nu-disco funk of the song is the perfect venue for the matured vocals of the eight current members of the group as they trill over the layered instrumentals, shifting the song gradually towards the final explosive chorus. Breaking things down with a simple pounding electro-pop rhythm laced with slaphappy synths, the track is a festive anthem for women. The banger plays things up with assertive verses and high-pitched belts backed by trumped up brass elements to emphasize this sexier rendition of the girl group.