This book introduces polytempic polymicrotonality as a new musical
aesthetic. It proposes music with more than one microtonal tuning system
and discusses examples from the literature to give an historic framework
showing that this tendency has been present throughout human musical
history. Polytempo is a tool for which polymicrotonal structures can
function in relief from its background, and it acts as a frame, or
ground structure, that is multidimensional, akin to the advancement of
perspective in Renaissance art. The book has historic significance as it
is the only book of its category, or genre, in music that features
polymicrotonality in music composition or production. It displays
examples of music literature for musical precedence in this area,
focusing on Charles Ives's Universe Symphony, unfinished since 1925.