Will told Spin
magazine that he wanted to make something totally unlike "I Gotta Feeling
," where each member had easily identifiable vocals. To achieve this he crafted a hook so saturated in Auto-Tune, it's impossible to tell if it's him or Fergie singing on the chorus. "We wanted to use the combination of our voices, which is unique," he said. "It's not about who's singing what part. A lot of times, people fall short in the studio worrying about who gets to sing which part."