He has also been an instrumental figure in the Catholic Church sexual abuse scandal.

Not necessarily a part of the tune, a hook can be an instrumental figure within the texture of an arrangement.

He was an instrumental figure as the Pyrgos club achieved successive promotions.

Having been an instrumental figure in the success of the under-17's the previous summer, he felt he could repeat the feat at a higher level.

He is regarded as an instrumental figure in launching the biotechnology revolution.

Pioli, 34, was an instrumental figure in the Jets' resurgence the past three years.

He was an instrumental figure in the creation and dissemination of classical dance and ballet as an American art form.

He's been an instrumental figure in the development of her career.

She became an instrumental figure in Shamlou's life and they remained together until his death in 2000.

He was also an instrumental figure in the emancipation of the serfs.