In a musical composition in the key of F major, what role does the note F play in shaping the overall tonality and harmonic structure of the piece?

In a musical composition in the key of F major, the note F serves as the tonic, or the central note that establishes the key. It is the foundation of the piece's tonality and helps create a sense of resolution and stability. The note F also influences the harmonic structure by determining the chords and melodies that are commonly used in the composition.