chord progressions in tonal music

 

The following list includes answers to questions from readers of the site.

Why was this web site set up?

What is on it?

How will this web site be used?

What is special about this theory?

What is the history of such ideas?

How has this new theory come about?

Who is this site for?

Do all musical phrases start with static harmony and end with dynamic harmony?

Why isn't the falling second progression included as one of the "strong" chord progressions?

Is there a difference between chord progressions in classical music and in popular music?

Will you add a section on jazz harmony at some point?

Does the theory work for late romantic composers such as Wagner?

Does the polarisation of chord progressions apply to modal music?

How can I contact the author?

What feedback has been received?

 

Why was this web site set up?

This site has been set up as a precursor to publishing and to support the book Syntactic Structures in Music. This presents a new theory that demonstrates, once voice leading patterns have been accounted for, how chord progressions work in tonal music and how these create musical phrase structures that are similar, in ways, to natural language structures. I want to get more feedback on the contents and format of the book before approaching publishers.

What is on it?

As well as a summary of the book Syntactic Structures in Music, the site contains an outline thesis which summarises some of the research behind the theory. It also contains animated demonstrations and a practical example of how the theory can be used to harmonise a melody. The site includes a section on the relevance of the theory to pop and rock music. The thesis part of the site contains a sample database of analysed pieces. This involves an interactive graph which demonstrates the comparative root progression analysis technique that is the basis of the evidence for the theory. This can also be used to show how the polarisation of chord progressions has taken place on the change from early modal music to tonal music. The site includes a summary of voice leading and how voice leading interacts with chord progression syntax.

How will this web site be used?

By creating this web site I hope to:

  • publish my ideas
  • illustrate the theory by the use of demonstrations and an example of how to harmonise a melody
  • help students of musical theory in their understanding of the subject
  • convince academics of the value of the theory by publishing a thesis and database of analyses
  • enable people to review the contents of the book
  • get feedback on the ideas and book
  • use the feedback to improve the writing and layout of the book

What is special about this theory?

Arising out of original analyses of root progressions in a large sample of tonal music, this web site represents a theory that explains, once voice leading patterns have been accounted for, how chord progressions work in tonal music (and to some extent modal music) and demonstrates how these create musical phrase structures that are similar, in ways, to natural language structures. This is the only book and website which successfully explains the relationship between voice leading, root progression syntax and phrase structures in music.

What is the history of such ideas?

Up to the present time, the predominant theories in music have been those of Rameau (1683 - 1764), Schoenberg (1874 - 1951) and Schenker (1868 - 1935). Each of these theorists, in his turn explains something about the way tonal music is structured. Rameau explains vertical harmonic formations; Schoenberg, the relationships between chords and key structures and Schenker the role of counterpoint in creating musical structure. However, none of these theorists fully explains the syntax of chord progressions or musical phrases or the relationship between voice leading and root progression patterns. For further information about the role of syntax in tonal music please refer to the notes on the connection with linguistics in Chapter 1 of the book section.

Some writers such as Weber, Schoenberg, McHose and Piston have described chord progressions by tables which show the probabilities of chords on each degree of the musical scale moving to chords on other degrees of the musical scale. However, there are problem with all of these tables and there is something unsatisfactory about a theory which is just a tabular description of observed data. A theory is meant to tell you something about underlying patterns. Also, these tables describe chord progressions regardless of the position of the chord in the musical phrase and they don't account for aspects of harmony such as chromatic chords or modulation.

There have been attempts by theorists such as Lerdahl and Jackendoff (A Generative Theory of Music) and others to produce a theory based on linguistic analogues. David Cope (Experiments in Musical Intelligence) uses linguistic paradigms to program computers to compose music in the styles of various composers. There is also work in progress in cognitive science that attempt to utilise scientific techniques to examine the way we hear tonal music. None of these explains how chord progressions work in the context of musical phrases and therefore do not offer theories of the syntax of tonal music.

For further information on the history of these ideas see the outline thesis which explains some of the weakness of these theories in more detail. I plan to expand this discussion and include it eventually in the book section. See also the bibliography and web links section on this site.

The ideas presented on this website and in the book Syntactic Structures in Music explains the syntax of chord progressions in tonal music.

How has this new theory come about?

The author's approach has been to evaluate musical data in a systematic way. The conclusions are that, once voice leading patterns have been accounted for, the analysis shows how chord progressions work in tonal music (and to some extent modal music) and demonstrates how these create musical phrase structures that are similar, in ways, to natural language structures. You can see how this analysis works in the section: Comparative Root Progression Analysis where you can try out the technique for yourself using the interactive graph tool.

The common patterns observed across this large sample of tonal (and tonally related) music forms the basis of the theory presented. The theory thus has an empirical and practical rather than philosophical basis. Some observations have been made about modal popular music in the appendix on popular music.

Who is this site for?

This site and Syntactic Structures in Music should be of interest to three groups of reader:

  1. The reader who has a basic understanding of musical theory. He or she should have no difficulty in following the ideas and examples. This type of reader would normally be familiar with basic harmonic notation such as I, V7, IIc or A7, E minor etc. and be familiar with the names of musical intervals and scales. It is hoped that this type of reader will be able expand his or her understanding of how tonal music is structured. In this group, I would include: teachers of music; music students; performing musicians, (professional or amateur). Feedback received confirms that members of this group often have an interest in understanding how chord progressions work in tonal music. This group of readers should view the Animated Demos and Example Harmonisation pages, followed by the Book Outline.

  2. The professional musical theorist or analyst. He or she should read this web site because it will give him or her another tool to evaluate and use in the quest to attain a deeper understanding of the syntax of musical compositions. In addition to the sections mentioned above, these readers should also view the Thesis section which summarises the evidence for the theory. This includes the interactive Root Progression Analysis Graph.

  3. The general reader who, interested in music, would like to know something about what gives music its internal logic and structure. This reader should be able to follow the Demonstrations and Example Harmonisation at least in outline.

If you find this site interesting then please pass the address of this web site on to your friends and colleagues.

Do all musical phrases start with static harmony and end with dynamic harmony?


Just as there is one basic structure in language that is modified in various ways, there is similarly one standard structure in tonal music that is modified in certain ways.

The basic structure is: static harmony, dynamic harmony, cadence, as explained in Chapter 1 and shown in demos 1 and 2.

This basic structure can be modified just as the basic sentence structure in language can be varied, i.e. as follows:

a) Short repeating pieces such as songs sometimes have only static harmony or only dynamic harmony. (Followed by a cadence)

b) The individual components can be expanded (internally) as indicated in chapter 5. and as shown in demos 3 & 4.

c) In longer pieces, incomplete and complete structures can 'conjoin' to form larger complete structures. Please refer to the Mozart analysis in the Thesis section for examples.

I hope to include further examples of these variations as time permits.

Why isn't the falling second progression included as one of the "strong" chord progressions?

Any progression can be used in dynamic harmony, however, it is certainly the case that, in common practice tonal music, once voice leading patterns have been accounted for, the three strong chord progressions (alpha, beta, gamma) are used in almost exclusive preference to the remaining three progressions. This polarisation appears to be an essential component of tonal music that distinguishes it from modal music (where the same preference is not in evidence). When the falling second progression is used it is usually associated with certain types of modulation (see Chapter 7) or explained by the presence of an appoggiatura chord. For instance, in popular music the falling 2nd progression, from V to IV in the 12 bar blues is really an example of the final chord I being elaboration by an appoggiatura chord IV See Chapter 3. Appoggiatura chord.

Is there a difference between chord progressions in classical music and in popular music?

A lot of popular music is tonal and therefore uses the same patterns as classical music. However, some popular music (folk influenced music and certain types of rock music) use modal scales and associated modal harmonies. These modal chord progressions differ in syntax from tonal chord progressions. Although, often, aspects of tonal phrase syntax are adopted. For more on modal harmony see:

Modal and 'Blues-modal' Harmony

and for more on popular music in general, see

Appendix A: Pop and Rock Music

Will you add a section on jazz harmony at some point?


The way harmony is used in jazz is a big subject in its own right.

I may include a little on the site about jazz harmony but a lot of what is already on the site can be applied to jazz, at least tonally based jazz. This is because a lot of jazz is based on improvisations of tonal popular songs. However, as in other popular music, when modal scales are used, there are some differences. These can be studied as important style variations from the usual tonal norms.

See section on popular music:

Appendix A: Pop and Rock Music

There are some references to jazz books in the Bibliography.


Does the theory work for late romantic composers such as Wagner?


The current list of analyses includes works by Wagner, Richard Strauss and Mahler as examples of late romantic music.

Based on the works analysed, the theory works well for this type of music. This is because in order for the chromatic and tonal complexity to work, underlying syntactic structures need to be in place to support it. Otherwise we would not be able to make sense of what is going on.

Most conventional theories concentrate on key relationships or chord classification or voice leading only, so they miss these underlying phrase structures.


Does the polarisation of chord progressions work for modal music?

The polarisation of chord progressions (i.e. the use of alpha beta and gamma progressions in priority to the others) is something that is found in tonal music. This applies to most classical music in the tonal period and to a lot of popular music but music prior to around 1650 and some popular music is based on modal scales and modal harmonies. The same degree of polarisation is not found in modal music. This represents a stylistic variation from tonal music. Other aspects of syntax, however, are sometimes present - such as the way the musical phrases are structured.

There is some information about this at:

Modal and 'Blues-modal' Harmony

and

Appendix A: Pop and Rock Music

 

How can I contact the author?

If you find this web site of interest then please e-mail me your thoughts. Press here for my contact address. I use all such feedback to improve this site and Syntactic Structures in Music.

What feedback has been received?

Feedback received to date has been very positive. Where issues have been raised these have been answered by improving the wording and explanations on the website. Some of the more frequently asked questions are included in the list above.

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