Dissonance is the cultural perception of two or more pitches sounded harmonically that form intervals not expected within the current musical context. These intervals typically occur higher in the harmonic series than other intervals considered to be "consonant".
Dissonance is the experience of hearing multiple pitches sounded harmonically that form intervals that are unexpected in the surrounding musical context. These intervals commonly create musical tension, and can be found farther up in the harmonic series than intervals considered to be "consonant".
