Answer is A!;) it is on hello music theory.con
Answer:
In tonal music, chord progressions have the function of establishing or contradicting a tonality, the technical name for what is commonly understood as the "key" of a song or piece. Chord progressions are usually expressed by Roman numerals in Classical music theory. For example, the common chord progression I–vi–ii–V.
Explanation:
The director leads the creative team.
The use of chromatic tones. example: in c-major, C# Db D# Eb F# Gb G# AB A# and Bb.