similar to pandiatonicism except for the "diatonic" part. This basically refers to any traditional tonality in the functional sense. Twelve tone music falls into this category although it can be applied to any music that is atonal in nature&nbsp

also referred to as indeterminacy

a commonly misused term which refers to music having no perceived tonal center. This perception

the use of two tonalities (or keys) at the same time. This does not imply, for instance, sudden or rapid modulation from one key to another but rather a passage or work in which two distinct keys are used simultaneously. 

in simplest terms this can be defined as a scale consisting of half steps. It also would naturally refer to any melodic or harmonic passages which contain primarily half steps. Pärt's music is notable for its lack

Pärt's use involved the insertion of borrowed musical material, from composers such as Bach and Tchaikovsky, into his serial structure. This material included not only small quotations but also larger sections of basically unaltered music of these composers.&nbsp

see twelve-tone

see twelve-tone

The 13th and 14th century term hocket refers to a composition or technique involving two voices in which when one voice sings, the other rests. In the 16th century, the term was applied to a certain type of cadence in which one voice, approaching the tonic from above, fails to reach its destination, and instead has a rest at least one beat long. Th [..]

passages in which all voices sing identical or similar rhythms. This term also refers to music in which a melody lies in one voice while the other voices serve as accompaniment. When discussing Pärt's music, the former definition applies.&nbsp