Plagal and perfect cadences and chords and PIANO STYLE in music theory!

Cadences in Music: Exploring Perfect and Plagal Cadences, Chords, and Piano Style in Music Theory

In the study of music theory, cadences play a significant role in defining the structure and phrasing of a musical composition. A cadence is a chord progression that marks the end of a musical phrase or section. It provides a sense of resolution and closure to the listener. In this article, we will delve into two important types of cadences: perfect (authentic) and plagal cadences. Additionally, we will explore the concept of piano style in music theory.

Perfect Cadence

The perfect cadence, also known as the authentic cadence, is a chord progression that moves from the dominant chord (V) to the tonic chord (I). In other words, it is a progression from the fifth degree of the scale to the first degree. For instance, in the key of C major, the perfect cadence would involve a progression from the G chord to the C chord.

Perfect cadences are often considered the most conclusive and satisfying cadences, providing a strong sense of resolution. They are frequently used to conclude musical phrases or entire compositions. The perfect cadence is characterized by its firm and definitive sound, leaving the listener with a sense of finality.

Plagal Cadence

The plagal cadence, sometimes referred to as the “Amen Cadence,” involves a chord progression from the subdominant chord (IV) to the tonic chord (I). In the key of C major, this would be a progression from the F chord to the C chord.

Plagal cadences are often associated with traditional hymns, where the word “Amen” is frequently set to this particular cadence. Compared to the perfect cadence, the plagal cadence offers a softer and more gentle resolution. It evokes a sense of tranquility and spiritual completeness.

Piano Style in Music Theory

When it comes to playing the piano, understanding piano style is crucial. One aspect of piano style in music theory is the concept of minimizing hand movement, particularly in the right hand. The goal is to keep the hand and fingers close to the keys as much as possible when transitioning between chords.

For example, let’s consider a chord progression from E to Am. In this case, the B note in the E chord can simply move to C, while the E note remains in place. The G# (the leading note in E) can smoothly transition to A in the Am chord. By minimizing hand movement and finding efficient fingerings, pianists can achieve smoother and more fluid chord transitions.

Sources:

1. YouTube video: “Cadences – The 4 types explained – Perfect, Plagal, Imperfect, Interrupted” by Music in Theory (https://www.youtube.com/watch?v=3aRBWDHE4g8)
2. Music Theory Academy: “Cadences – Perfect, plagal, imperfect, interrupted” (https://www.musictheoryacademy.com/how-to-read-sheet-music/cadences/)
3. Music Theory Stack Exchange: “Plagal and perfect cadences and chords and PIANO STYLE in music theory!” (https://music.stackexchange.com/questions/73911/plagal-and-perfect-cadences-and-chords-and-piano-style-in-music-theory)

FAQs

What are cadences in music theory?

Cadences in music theory are chord progressions that mark the end of a musical phrase or section. They provide a sense of resolution and closure to the listener.

What is a perfect cadence?

A perfect cadence, also known as an authentic cadence, is a chord progression that moves from the dominant chord (V) to the tonic chord (I). It creates a strong and conclusive resolution.

What is a plagal cadence?

A plagal cadence is a chord progression that moves from the subdominant chord (IV) to the tonic chord (I). It is often associated with a softer and more gentle resolution, commonly found in traditional hymns.

How does piano style relate to music theory?

Piano style in music theory refers to the techniques and principles used when playing the piano. It includes concepts such as minimizing hand movement and finding efficient fingerings to achieve smoother chord transitions.

Why is minimizing hand movement important in piano playing?

Minimizing hand movement in piano playing helps maintain fluidity and accuracy. It allows pianists to transition between chords more smoothly and efficiently, resulting in a more polished and expressive performance.

Can you provide an example of minimizing hand movement in piano style?

For instance, when transitioning from the E major chord to the A minor chord, instead of lifting all fingers and repositioning them, the B note in the E chord can simply move to C, while the E note remains in place. The G# note in the E chord can smoothly transition to A in the A minor chord.

What is the significance of perfect cadences in music composition?

Perfect cadences are commonly used to conclude musical phrases or entire compositions. They provide a strong sense of resolution and finality, leaving the listener with a satisfying musical ending.

How does a plagal cadence evoke a different emotional quality compared to a perfect cadence?

A plagal cadence offers a softer and more gentle resolution, often associated with feelings of tranquility and spiritual completeness. It can create a sense of calm and emotional release in the listener.