"Can't Get It out of My Head"

Last week, I listened to the 1976 concert at the Guildhall and noticed that under the line "Can't move" in "Can't Get It out of My Head," the bass plays a static pitch (a C), musically illustrating the lyric.  The chord there (a C major) is also held for two full measures, providing a similar effect.

When I referenced the studio version to confirm these, I also realized that the persistence mentioned in the title line is demonstrated by various repetitions in the chorus:  most of the lyrics in the first, second, and fourth lines are the same; the melody differs only slightly from line to line; and the chord progression for each line is identical (C major | G major | F major | G major).