Polemics
was written in the spring of 1997 for pianist Max Midroit, who has performed
it in concert several times, including a performance at the 1999 Society
of Composers National Conference. Mr. Midroit's recording of Polemics
is available on the CRI compact disc eXchange Latin America (CRI CD
848), part of that label's Music at the Crossroads series. The
CRI catalogue has been acquired by New World Records.
The piece has also been performed by Aoi Sakaue at the Inter College Computer
Music Festival in Japan, and by Dr. Madeline Williamson in Arizona.
Polemics is a multilevel exchange among various aspects of
the acoustic characteristics of the piano (such as the properties of
sustained tones), with their electronic counterpart on the tape.
These acoustic qualities complement, modulate, and transform each other's
gestures throughout the work, in ways that are at times complementary
and at times antagonistic.
The tape part was created through electronic synthesis of wave forms
taken from the components of the piano sound itself. These wave
forms include those of the hammer striking the strings at different registers,
which were used to build the non-pitched sounds. The pitched sounds
were constructed from the wave forms of the attack, decay, and sustain
portions of piano tones at different dynamic levels.
Many segments of the electronic part were created by taking passages
which occur earlier in the piece and shortening their duration by a high
percentage (80 % and above). As the computer performs these passages at
a very high speed, they are transformed into completely new events. These
recycled ideas are then coupled with the piano part to produce complete,
interlocked phrases.