die Sinfonie
symphony
A large-scale musical composition for an orchestra, typically consisting of several movements.
Beethovens neunte Sinfonie ist weltberühmt.
Beethoven's Ninth Symphony is world-famous.

symphony
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symphony
A large-scale musical composition for an orchestra, typically consisting of several movements.
Beethovens neunte Sinfonie ist weltberühmt.
Beethoven's Ninth Symphony is world-famous.

The word comes from the Greek 'symphonia', which means 'sounding together' or 'harmony'. Knowing this helps you understand both the musical and the figurative meaning of harmony and perfect interplay.
Das Orchester spielte die Sinfonie mit großer Leidenschaft.
The orchestra played the symphony with great passion.
In a musical context, a symphony is often specified more precisely with the composer (e.g. 'eine Sinfonie von Mozart' (a symphony by Mozart)) or an ordinal number (e.g. 'die fünfte Sinfonie' (the fifth symphony)).
Wir hören heute Abend die siebte Sinfonie von Dvořák.
Tonight we are listening to Dvořák's Seventh Symphony.
The figurative meaning of 'Sinfonie' (symphony) is used mainly in elevated or poetic language. In normal everyday life, this use is rare.
Der Dichter beschrieb den Wald als eine Sinfonie des Lebens.
The poet described the forest as a symphony of life.
In the figurative meaning, 'Sinfonie' (symphony) is almost always followed by the preposition 'aus' (of/from) or a genitive with 'der' (of the) to describe the harmonious elements.
Das Gericht war eine Sinfonie aus exotischen Gewürzen.
The dish was a symphony of exotic spices.
concert
'das Konzert' and 'die Sinfonie' both belong to music, especially classical music, but they refer to different things. In everyday language, a 'Konzert' is a musical event in front of an audience. In classical music, it can also be a musical work for a solo instrument and orchestra. A 'Sinfonie', on the other hand, is a large work for orchestra, usually with several movements. The words can be confused because both can be played by an orchestra. If you are talking about attending a musical evening, use 'Konzert'. If you mean the specific orchestral work, 'Sinfonie' is more precise.

In der Schule hören wir heute eine Sinfonie von Beethoven.
At school today, we are listening to a symphony by Beethoven.
Das Konzert beginnt um acht, also sollten wir früher losfahren.
The concert starts at eight, so we should leave earlier.