Over the past six years, Billboard's staff has made its picks for the greatest pop star of every year, from 1981 to present. See our full updated list here.

From groundbreaking choreography to jaw-dropping production, these Super Bowl halftime performances turned a brief interlude into unforgettable cultural moments that shaped music history.

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"Whether you're the group delivering the halftime show or you're field crew delivering the field," Nick Pappas said, "the goal is perfection for everyone." ...