really f-ing random
the spot: the F train, ny
the subject: 2 girl horn players
the meregar: some tenor trombones come with an extra length of tubing (called an F attachment) which is accessed by a trigger operated by the thumb. A tenor trombone with an F attachment can be useful, particularly in providing alternative slide positions in otherwise awkward passages. Such trombones are identical to bass trombones in terms of range, but the smaller bore of the tenor trombone means that the timbre is not the same. Use of the F attachment also changes the quality of the sound on the tenor trombone because it alters the ratio between the conical and cylindrical lengths of tubing. This can produce noticeable differences in tone colour, particularly in slow moving passages where the F attachment is used on only a few isolated notes. This is the reason most trombonists generally restrict the use of the F attachment to the lower register and spend a great deal of time trying to equalize the sound.
