How to Say "symphony" in Spanish
The Spanish word for “symphony” is “sinfonía” — B1 level.

Examples
La novena sinfonía de Beethoven es mi favorita.
Beethoven's ninth symphony is my favorite.
La orquesta ensayó la sinfonía durante tres horas.
The orchestra rehearsed the symphony for three hours.
El amanecer en el campo era una sinfonía de colores.
The sunrise in the countryside was a symphony of colors.
It's always a 'La' word
Even though it is a long, formal word, it follows the standard rule: it ends in 'a', so it is feminine. Use 'la sinfonía' or 'una sinfonía'.
Describing things that look good together
You can use 'sinfonía de...' followed by a plural word (like colors or smells) to describe something that is perfectly blended or beautiful.
Sinfonía vs. Sinfónica
Mistake: “Voy a escuchar una sinfónica.”
Correction: Voy a escuchar una sinfonía.
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