The key musical idea of this concerto comes at the beginning.

I was testing these key ideas with a group when a woman objected.

Two key ideas helped him make fly fishing into a profitable business.

This was a key idea in the development of Imagism.

However, the key idea is to think through all four quadrants.

If we look at business and trade relations, then my report essentially contains one key idea.

A number of key ideas were set out in the document.

The key idea was that in all boards of companies with over 2000 employees, there would be a right to have representation for workers.

The key idea is clear: foreign policy should serve domestic purposes.

The key idea of the game is an expanding world.