gateposts is a form of:

Crescendo



noun
1.
(COUNTABLE, UNCOUNTABLE) ការបង្កើនជាលំដាប់នៃសំឡេង
ENGLISH MEANING
noun
1.
A gradual increase in the strength and fullness of tone with which a passage is performed.
2.
A passage to be performed with constantly increasing volume of tone.
adjective / adverb
1.
With a constantly increasing volume of voice; with gradually increasing strength and fullness of tone; -- a direction for the performance of music, indicated by the mark, or by writing the word on the score.