The One downbeat emphasis is an arrangement and dynamic technique that places primary weight and impact directly on the first beat of a measure. This can be accomplished by locking foundational bass elements directly to beat one or by cutting frequency content in preceding sections to trigger a dramatic release on the measure's start. Concentrating energy here establishes an anchor that defines the groove and magnifies transitions.
Papa's Got a Brand New Bag by James Brown hyper-emphasizes the first beat of the bar by locking the bassline directly to the start of each measure. In Believer by Imagine Dragons, low frequencies are cleared out during the verses to allow heavy, saturated sub-bass patches to hit with maximum dynamic contrast directly on the downbeat of the chorus.