Understanding Roman Numerals in Music Theory

Roman numerals are really helpful in music theory. They help musicians change keys and understand harmonies better. Let’s break it down!

1. What is Functional Harmony?

   • Roman numerals show what each chord does in a certain key.
   • For example, the I-IV-V chord progression is very popular and makes up 75% of Western music.

2. What is Modulation?

   • Modulation means changing keys smoothly.
   • When moving from C major (I) to G major (V), you can see how they share some notes. This makes the change sound smooth and nice.

3. What are Chord Progressions?

   • In a major scale, we can use the Roman numerals I, ii, iii, IV, V, vi, and vii°.
   • This helps composers see different paths they can take when creating music.

Overall, knowing Roman numerals helps musicians analyze harmonies and makes key changes easier when writing music.