There are Major Keys listed around the circle of Fifths.

As mentioned above, the arrangement of the key signatures in the Circle of Fifths is based on the number of sharps or flats in each key. There are 7 sharp keys and 7 flat keys. However, the top of the Circle, 12 o'clock, is our neutral key, meaning no sharps or flats: C Major.

Explanation:

the style of music that was composed during the classical era was concerto grosso.

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