Once I did that the strings were all surprise about a quarter-tone flat and had to retune back.    From Wordnik.com.  [The Last Dancer] Reference

For hours with an oscillator squeal beeping hi his ear to guide him, he sang endless quarter-tone scales.    From Wordnik.com.  [Starchild Omnibus]

For here it is a quarter-tone, and there it is the vowel or the consonant; and there is another unit of weight and another of movement.    From Wordnik.com.  [Metaphysics] Reference

I simply applied the same principle to my genetically enlarged gulls, testing them at each quarter-tone past human range before I found exactly the right note.    From Wordnik.com.  [...And Nail] Reference

In a series of experiments on Mr. Kennedy's machine, they've thrown several man-sized logs and two quarter-tone dead pigs into the air; one of the pigs parachuted gently back to earth, the other landed rather more forcefully.    From Wordnik.com.  [Archive 2005-02-01] Reference

And similarly if all existing things were tunes, they would have been a number, but a number of quarter-tones, and their essence would not have been number; and the one would have been something whose substance was not to be one but to be the quarter-tone.    From Wordnik.com.  [Metaphysics] Reference

And as in other spheres the basic element is simple but not identical in all-in a system of weight it is the mina, in music the quarter-tone, and so on — so in syllogism the unit is an immediate premiss, and in the knowledge that demonstration gives it is an intuition.    From Wordnik.com.  [Posterior Analytics] Reference

And so in astronomy a ‘one’ of this sort is the starting-point and measure (for they assume the movement of the heavens to be uniform and the quickest, and judge the others by reference to it), and in music the quarter-tone (because it is the least interval), and in speech the letter.    From Wordnik.com.  [Metaphysics] Reference

"We come into the world," said Epictetus, "with no natural notion of a right-angled triangle, or of a quarter-tone, or of a half-tone; but we learn each of these things by a certain transmission according to art; and for this reason those who do not know them do not think that they know them.    From Wordnik.com.  [A Handbook of Ethical Theory] Reference

The stealthy rubato of Coleman’s phrases and his sudden accelerations of tempo implied liberation from strict meter, much as his penchant for hitting notes a quarter-tone sharp of flat and his refusal to harmonize his saxophone with Don Cherry’s trumpet during group passages implied some escape from the well-tempered scale.    From Wordnik.com.  [The Reinvention of Jazz] Reference