Comment by InfiniteAscent

"Harder, Better, Faster, Stronger" was built around a one- or two-bar loop sampled from Edwin Birdsong's "Cola Bottle Baby."

Daft Punk determined that this loop had a tempo of 116.527 BPM and played it a semitone higher.

116,527 * 2 ^ (1 / 12) = 123,456 BPM