der Komponist
composer
A person who writes and creates pieces of music.
Wolfgang Amadeus Mozart war ein berühmter Komponist aus Österreich.
Wolfgang Amadeus Mozart was a famous composer from Austria.

composer
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composer
A person who writes and creates pieces of music.
Wolfgang Amadeus Mozart war ein berühmter Komponist aus Österreich.
Wolfgang Amadeus Mozart was a famous composer from Austria.

'Der Komponist' (the composer) belongs to a word family. The verb is 'komponieren' (to compose/write a piece of music), and the result of the work is 'die Komposition' (the composition / piece of music).
Er hat schon als Kind angefangen, kleine Stücke zu komponieren.
He started composing small pieces as a child.
The ending '-ist' often refers to a person who performs a particular activity, frequently as a profession. Other examples are 'Journalist' (journalist), 'Pianist' (pianist), or 'Spezialist' (specialist).
Der Künstler stellte seine neuen Werke vor.
The artist presented his new works.
Common adjectives used with 'Komponist' (composer) are 'berühmt' (famous), 'klassisch' (classical), or 'zeitgenössisch' (contemporary). You can also specify the field, e.g. 'ein Komponist von Filmmusik' (a composer of film music).
Hans Zimmer ist ein weltberühmter Komponist von Filmmusik.
Hans Zimmer is a world-famous composer of film music.
musician
'der Musiker' and 'der Komponist' both have to do with music, but they do not describe the same task. 'der Musiker' makes music, for example on stage, with an instrument, or with the voice. 'der Komponist' writes or creates pieces of music. A composer can also be a musician, but the word emphasizes writing the music, not necessarily playing it. Learners may confuse the words because both professions are in the field of music. If someone performs music, you are more likely to say 'Musiker'; if someone creates a piece, you say 'Komponist'.

In der Schule spricht die Klasse heute über einen bekannten Komponisten.
At school, the class is talking about a well-known composer today.
Ein Musiker spielte am Wochenende Gitarre auf dem Stadtfest.
A musician played guitar at the town festival at the weekend.