Edited sentence: Gustav Mahler wrote frequently for the F Trumpet, and the opening solo of his Symphony #5 is written for this instrument.Some professional players today still own F Trumpets in addition to the more common B-flat and C instruments and prefer to use them to perform passages originally written for the F instrument.The brilliance of the F Trumpet and the difficulty in blending it with other brasses gradually led to its replacement in the modern orchestra by trumpets in either B-flat or C.The tone was very noble and bright and the instrument was hard to play softly.Up until the early 20th century, trumpets in F were common in the orchestral literature