Over and over

A hard one to dislodge. Over and Over by Hot Chip. Lasted well into midmorning.
'Over and over and over and over
Like a monkey with a miniature cymbal'
A great lyric and a catchy song, a repetitive lyric about the idea of repetition. Clever.

Repetition

the glue that holds a song together
the 'bookends' of a story
the rhythm of knitting
it is the mantra and the chanting

There's an interesting discussion on this page and a good example of a poem that uses repetition effectively. The discussion raises the notion that, in a poem, the second repetition of a word 'reduce[s] the energy at that point as well as at the first appearance of the word'.