Meaning of “compose” - Learner’s Dictionary

compose

verb uk us /kəmˈpəʊz/
PARTS [ T ]

B2 to be the parts that something consists of:

MUSIC [ I, T ]

B2 to write a piece of music

compose yourself

to make yourself calm again after being angry or upset:

He needed some time to compose himself.
WRITING [ T ]

to write a speech, letter, etc, thinking carefully about the words to use:

Laura was composing a letter of sympathy.

(Definition of “compose” from the Cambridge Learner’s Dictionary © Cambridge University Press)