Back in the Noughties, when it came to British girl groups, there were only two that mattered - Girls Aloud and Sugababes. There was room for both: Girls Aloud were neon-bright, quirky and reckless, while Sugababes offered something moodier, often R&B-tinged and killer harmonies.
However, the release of Push The Button marked a significant shift in the Sugababes brand. Their sullen attitude and deadpan delivery that had become the trio's signature style was still largely in tact, but the sound and image had undergone a significant primp and preen.
The song - written by the group about Keisha's failed flirting with another singer - was produced by US hitmaker Dallas Austin, who had turned out global hits for TLC, Pink and Janet Jackson.
The result was a dancey, joyous singalong that immediately stood out for sparse electropop production, and even drew comparisons to ABBA.
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