Cadence

Music uses special sounds to end. These are called cadences. They help a song feel finished.

Some cadences sound very strong. They tell you the song is done. Other cadences sound weak. They make you wait for more music.

One type is the plagal cadence. People call this the "Amen" cadence. It is used in many hymns.

Sometimes, music can surprise you. A deceptive cadence moves to a new sound. It feels like a sudden sidestep.

These sounds help guide the listener. They make the music feel right.

In music, a cadence is a way to end a phrase. It is a set of notes or chords. These sounds help a song feel finished. Some cadences feel very strong. They give a sense of full closure. Others feel weak. They make the listener wait for more music.

One strong type is the authentic cadence. It moves from a dominant chord to a tonic chord. A perfect authentic cadence is the strongest kind. It often marks a very important moment in a piece.

A half cadence is a weak type. It ends on a dominant chord. This sounds incomplete. It calls for the music to keep going.

Some cadences can surprise you. A deceptive cadence is also called an interrupted cadence. It moves to a chord that is not the tonic. This creates a "hanging" feeling. It can feel like a sudden sidestep in the music.

There is also the plagal cadence. Many people call it the "Amen" cadence. This is because it is used in many hymns.

Finally, a Picardy third is a special tool. It uses a major chord to end a piece in a minor key. This can change the mood at the very end.

Have you ever listened to a song and felt a sudden sense of peace? That feeling often comes from a cadence. In music theory, a cadence is the end of a musical phrase. It uses melody or harmony to create a sense of resolution. This means the music feels like it has reached a resting point. Some cadences feel very strong and final. Others feel weak or unfinished, making you wait for more.

There are different ways cadences work using chords or rhythms. A harmonic cadence uses a progression of two or more chords. This sequence helps conclude a section or an entire piece of music. A rhythmic cadence uses a specific pattern to signal the end. Musicians often label these as "strong" or "weak" cadences. The strength depends on the impression of finality they give the listener.

Music historians and theorists have studied these sounds for a long time. The musicologist Edward Lowinsky called the cadence the "cradle of tonality." This suggests cadences are the base for how music sounds. Many types of cadences became important from the 16th century onwards. For example, the Phrygian half cadence has an archaic sound. This style comes from Renaissance harmony and sounds very old.

There are four main types of harmonic cadences. The authentic cadence moves from a dominant chord to a tonic chord. A perfect authentic cadence is the strongest type of all. The half cadence ends on a dominant chord and sounds incomplete. The plagal cadence is often called the "Amen" cadence. This is because it is used so often in hymns. Finally, the deceptive cadence moves to an unexpected chord. It creates a "hanging" feeling that can surprise the listener.

Cadences help us understand the structure of a musical journey. They act like punctuation marks in a sentence. An authentic cadence might be a period at the end of a thought. A half cadence might be a comma that asks for more. You can hear these in many famous works. For instance, Brahms used a deceptive cadence in his Third Symphony. You can even hear them in popular songs like Pink Floyd's "Bring the Boys Back Home."

In Western musical theory, a cadence is a structural tool used to end a musical phrase. It uses melody or harmony to create a sense of resolution. This resolution can feel complete or only partial. Music historians often view cadences as vital markers of musical meaning. The musicologist Edward Lowinsky even called the cadence the "cradle of tonality." This suggests that cadences are the foundation for how tonal music functions.

There are two primary ways to classify a cadence: harmonic and rhythmic. A harmonic cadence is a progression of two or more chords. This sequence concludes a phrase, a section, or an entire piece. A rhythmic cadence uses a specific pattern to indicate an ending. Musicians also label cadences as "weak" or "strong." This label depends on the impression of finality they give the listener. The harmonic rhythm, or the rate at which chords change, helps determine where a cadence occurs.

Music theorists divide harmonic cadences into four main types. These are the authentic, half, plagal, and deceptive cadences. Authentic cadences move from a dominant-functioning chord to a tonic chord. The tonic is the central pitch of a piece. A perfect authentic cadence (PAC) is the strongest version. In a PAC, the chords are in root position. This means the roots of both chords are in the bass. Also, the tonic must be in the highest voice.

Imperfect authentic cadences (IAC) offer variations of this strong sound. One type is the root position IAC, where the highest voice is not the tonic. Another is the inverted IAC, where one or both chords are inverted. There is also the leading-tone IAC, which replaces the penultimate chord with a leading-tone triad. A specific subtype is the evaded cadence. This occurs when a dominant seventh chord moves to a first inversion tonic chord. This movement happens because the seventh must fall stepwise to the tonic's third.

A half cadence, or semicadence, ends on a dominant chord (V). Because it does not reach the tonic, it sounds incomplete. This creates a "weak" feeling that calls for more music. There are several specific versions of the half cadence. The Phrygian half cadence uses a iv6–V progression in a minor key. It has an archaic sound from the Renaissance era. The Lydian half cadence is similar but uses a raised fourth. There is also the rare plagal half cadence, which uses a I–IV progression.

The plagal cadence moves from the subdominant (IV) to the tonic (I). It is famously known as the "Amen" cadence. This is because it is frequently used in hymns. Some musicians use a minor plagal cadence for a strong resolution. Another unique form is the Moravian cadence. This occurs when the outer notes of the first chord move inward by a tone. This specific type appears in the works of composers like Leoš Janáček.

A deceptive cadence, also called an interrupted cadence, is a surprising move. It moves from a dominant chord to something other than the tonic. Most often, it moves to the submediant chord (VI). This creates a "hanging" or suspended feeling for the listener. Gustav Mahler used many deceptive cadences at the start of his 9th Symphony. Brahms also used this in his Third Symphony to sidestep between keys. Even popular music, such as Pink Floyd, uses this technique.

Cadences can also be categorized by their rhythmic position. A metrically accented cadence ends on a strong beat, like a downbeat. These are considered structurally significant. A metrically unaccented cadence ends on a weak beat. This can make the resolution feel less forceful. Finally, the Picardy third is a special Renaissance device. It involves ending a minor or modal section with a major tonic chord. This provides a bright, unexpected sense of closure to a dark passage.