Instrumental

He was greatly instrumental in making Japan understood.

I like vocal music better than instrumental music.

I like instrumental music.

The only metal that a metal detector can detect is the metal in another metal detector. That fact was instrumental in my parents' meeting.

The instrumental case is one of the most graceful aspects of the Russian language.

Newton was instrumental in developing techniques to prevent counterfeiting of the English money.

Beethoven's instrumental music invites us to contemplate a landscape gigantic beyond measure.

In a time when women were discouraged from studying math and science, Roman became a research astronomer and was instrumental in taking NASA's Hubble Space Telescope from an idea to reality and establishing NASA’s program of space-based astronomical observatories.

Russian has six cases: nominative, genitive, dative, accusative, instrumental, and prepositional.

As Paul says, it is really perfectly gratuitous ("es ist im grunde reine willkur") to call the case we have in German (and Old English) a dative, for besides the functions of the dative it fulfils the functions of the old locative, ablative, and instrumental.