rack one's brains

Rack one's brains and it's still a struggle to come up with an album of indiepop – in the most purist sense of the term – anywhere near as good as the second from Veronica Falls.

Butono = a button.Cerbumi = to rack one’s brains.

The whole thing only required a little calculation; there was no need to rack one's brains about it.

Had "The Merry Wives" been produced under ordinary conditions, one would have had to rack one's brains to account for its feebleness.