Which preposition to use with improvisation

of Occurrences 17%

America is in a more fortunate situation than the nations of Europe; yet to return our resources to the channels of peace, to free our institutions from the hasty improvisations of war emergency, and to protect them from the effects of forced and abnormal application, is a task which will test the wisdom and character of our leaders and our people.

with Occurrences 2%

And now young Nadab commenced one of those surprising feats of Improvisation with which he used to charm audiences.

in Occurrences 1%

She postured before him in an attitude of love, and commenced an improvisation in song about him.

on Occurrences 1%

She was friendly, brilliant in her conversation, and appeared deeply impressed with my improvisation on "Immortality"the immortality first of eternal Rome, and then of the fair singer's artto which I was pressed when Bernardo let out the secret of my gift.

to Occurrences 1%

Thus the mime was lifted from the level of the lowest farcical improvisation to a recognised position in literature, and quite incidentally became useful in education.

Which preposition to use with  improvisation