The central norms of this tradition became codified between 1550 and 1900, which is known as the common practice period.

The common practice period is when many of the ideas that make up western classical music took shape, standardized, or were codified.

In the common practice period, the diminished triad is considered dissonant, or unstable.

In the common practice period, musical style required preparation for all dissonances, followed by and then resolution to a consonance.

Popular music uses the cadences of the common practice period and jazz, with the same or different voice leading.

Theory, even of music of the common practice period, may take many other forms.

Many people have proposed that a "new" common practice period is now discernible in 20th century "classical" music.

The canonical common practice period was from 1550 to 1900, although the style continues to be performed and developed to this day.

The major scale had a central importance in the history of music, particularly in the common practice period.

In Western classical music during the common practice period, chord progressions are used to structure a musical composition.