What is the meaning of parallel keys in piano?

In music, parallel keys are pairs of keys that share the same key signature. They are also called relative keys. For example, the key of C major and the key of A minor are parallel keys because they both have no sharps or flats in their key signatures.

Parallel keys are often used in classical music to provide contrast between two sections of a piece. For example, a piece in the key of C major might modulate to the key of A minor for a section in a different mood or tempo.

Parallel keys can also be used to create interesting harmonic effects. For example, playing a chord in one parallel key over a chord in the other can create a sense of tension or dissonance.

Here is a table showing all of the parallel keys:

| Major key | Minor key |

|---|---|

| C major | A minor |

| G major | E minor |

| D major | B minor |

| A major | F♯ minor |

| E major | C♯ minor |

| B major | G♯ minor |

| F♯ major | D♯ minor |

| C♯ major | A♯ minor |

| F major | D minor |

| Bb major | G minor |

| Eb major | C minor |

| Ab major | F minor |

Understanding the concept of parallel keys is essential for music theory and composition. It can be used to create interesting and complex harmonic progressions, as well as to provide contrast and variety within a piece of music.