Composer Kyle Gann provides a detailed introduction to Thoegersen's practice in his liner notes to the CD "Three Pieces in Polytempic Polymicrotonality" on New World Records.
He says, radically, Thoegersen has musical layers simultaneously moving in different tempos, plus, even moreso, in different microtonal scales playing at the same time.
Nevertheless, Gann contrasts the resulting "fervent and heterogeneous multidimensionality" with an emergent level of charm and simplicity that belies the initial impression.
The monograph both guides contemporary composers into this novel approach and practice (which can accommodate multiple styles), and establishes diverse historical precedents reaching back to Ancient Greece (in particular Aristoxenus of Tarentum), the Middle Ages (in particular Boethius), the Renaissance (Gioseffo Zarlino and Nicola Vicentino) and many 20th century composers, especially Charles Ives and Jean-Etienne Marie.
Thoegersen's analysis of the ratio relationships between the three orchestras that constitute the Universe Symphony, is cited by Johnny Reinhard.
Readers take note, and hardy souls may respond" and suggests bring "a laser-like and microscopic intensity to one's listening."