At 122 the drums arrive with a little swing in them, and the whole thing sits in C major — bright without being sugary, chords leaning upward while the bass keeps its feet on the floor. The energy reading is high, near the top of the scale, but it doesn't play like a sprint; it plays like a room filling up, keys and string phrases trading small gestures over a kick that never quite lets go of the groove.
Where it earns its place is the middle of a set, that stretch where you want warmth and a bit of lift without breaking the spell. The disco tinge lives in the guitar flecks and the way the hats sit back; the emotional pull is in the chord change itself. I'd put it on before the night turns hard, or as the last warm thing before it does.