Nine movements for mixed speaking choruses. Divided into three parts. 

Inhaling and exhaling quite deliberately as one plays a growing melody. Basically a flute piece, though other wind instruments are welcome to try it. 7-11 minutes.

Seven-note chords, sometimes tonal. sometimes atonal. are constructed logically with the same six intervals in different orders. The orchestration changes slightly every 12 chords and it takes 20 minutes

23 minutes of organ music all derived from an (11,4,6) block design.

Nine short movements in eight minutes, always with the same sequence of 60 notes.

Rational harmonies in five voices for amplified ensemble (solo 1, solo 2, keyboard, guitar and bass). 20 minutes.

The music is on 12 music stands, and the viola soloist makes the rounds, playing all the fragments in 6-8 minutes.

Nine miniatures in phrases of 12 and 13 notes, following the rhythm of classical French poetry. 10 minutes.

Logical up-and-down progressions, dedicated to Didier Aschour. Five short movements in 9 minutes.

Mathematical music, systematically following finite automata, for six percussionists. Eighteen short movements, 50 minutes in all, but playable in incomplete versions. Score and material offered in one

A collaboration with Luiz-Henrique Yudo for six percussionists. The music goes BACK & FORTH between the two composers every 10 seconds following two graphic designs made by each composer. Exactly 10

Twelve pieces for clarinet and narrator, or clarinetist/narrator. Also available in French as Histoires a dormir debout, and in German as Gutenachtgeschichten. 

30 minutes of continually changing arpeggios, following a set of mathematically determined combinations, written for pianist John McAlpine.

The largest work of Tom Johnson, premiered by the orchestra and chorus of the Dutch Radio in September 1996, and had its German premier in Berlin in November of 1998. The text comes from various books,

A capella score of the seven choruses of Part IV (with texts from the prison letters), which can be presented outside the context of the oratorio as a whole. Double Chorus (SATB-SATB)

A five bar theme is gradually transformed into one repeating chord. 6 minutes, score and parts.

Seven kinds of music derived from seven drawings all based on a (12,3,2) combinatorial design. About 20 minutes. The three B-flat clarinets each read from the score.

The Combinations for String Quartet were commisioned by MarzMusik in Berlin, for the premier by the Bozzini Quartet in MärzMusik 2004. The music is constructed by systematically taking all the

Four movements with a mathematical melody in one, two, three, and finally four voices. 6 minutes.

Five movements in 14 minutes.