Consonance and dissonance become indistinct from each other&colon; dissonances slowly become heard as consonances. Music is composed of consonances and dissonances. He also creates unique rhythmical and chromatic consonances throughout these motifs. The tonality diamond is often regarded as comprising the set of consonances of the n-limit. The 3rd and 6th are considered imperfect consonances because one can make distinctions between them. These combinations create pleasing contrasts and consonances that are said to be harmonious. They were invented to make the consonances sound more beautiful. The four consonances are the 3rd, 5th, 6th and 8th. Kerll's work includes continuo parts that specifically order the performer to "avoid consonances".