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Dissonance, resolution, and suspense can be used to create musical interest. Where a melody or chordal pattern is expected to resolve to a certain note or chord, a different but similarly suitable note can be resolved to instead, creating an interesting and unexpected sound. For example, the deceptive cadence.
Resolution has a strong basis in tonal music, since atonal music generally contains a more constant level of dissonance and lacks a tonal center to which to resolve. The concept of "resolution", and the degree to which resolution is "expected", is contextual as to culture and historical period. In a classical piece of the Baroque period, for example, an added sixth chord (made up of the notes C, E, G and A, for example) has a very strong need to resolve, while in a more modern work, that need is less strong - in the context of a pop or jazz piece, such a chord could comfortably end a piece and have no particular need to resolve.
An example of a single dissonant note which requires resolution would be, for instance, an F during a C major chord, CEG, which creates a dissonance with both E and G and may resolve to either, though more usually to E (the closer pitch), see Suspended chord. In reference to chords and progressions for example, a phrase ending with the following cadence IV-V, a half cadence, does not have a high degree of resolution. However, if this cadence were changed to (IV-)V-I, an authentic cadence, it would resolve much more strongly by ending on the tonic I chord.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Resolution". Allthough most Wikipedia articles provide accurate information accuracy can not be guaranteed.
Violin Concerto No. 1 in G minor
Eine kleine Nachtmusik (serenade no. 13)