What Makes a Symphony ‘Grand’ or ‘Simple’?

Imagine a small group of friends playing music, that’s like a simple symphony. Now imagine an entire orchestra with hundreds of musicians, all playing together in perfect harmony, that’s a grand symphony! A symphony is like a big musical story told by many voices at once. When there are more people and the music feels bigger and louder, it becomes ‘grand.’ But when only a few people play gently, it becomes ‘simple.’