What is the purpose of a music chord wheel and how can it help in understanding chord progressions and harmonies?

A music chord wheel is a tool used to visualize and understand the relationships between chords in music. It can help in understanding chord progressions and harmonies by showing which chords are closely related and which ones work well together in a musical context. This can aid in composing music, improvising, and analyzing existing pieces to create more cohesive and harmonically rich music.