Final answer:
The Circle of Fifths is the tool that shows all major and minor keys and their relationships. It is vital for understanding key signatures, chord progressions, and for modulating between keys.
Step-by-step explanation:
The tool that shows all major and minor keys and their relationships is called the Circle of Fifths. It is a visual representation of the 12 pitches of the chromatic scale, arranged into a circle. Major and minor keys are aligned so that each major key is associated with its relative minor.
The Circle of Fifths illustrates how keys are related to one another, and it shows the number of sharps or flats in each key signature. It also demonstrates the pattern of key changes moving in intervals of a fifth.
Why It's Useful
The Circle of Fifths is an essential tool for musicians, as it aids in understanding key signatures, scales, and chord progressions. It offers a clear visualization of how to modulate from one key to another and helps with transposition.
The tool that shows all major and minor keys and their relationships is the circle of 5ths. The circle of 5ths is a visual representation of the relationship between different keys in music. It helps musicians understand the order of sharps and flats in a key signature and how keys are related to each other