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John McAlpine performs composer Tom Johnson's beautiful piano cycle "Counting Keys", using mathematical progressions to create the structure of its 5 movements; plus 8 parts from his "Organ and Silence for Piano"; and two other compositions using mathematical processes.

Johnson, Tom
Counting Keys

Johnson, Tom: Counting Keys (Edition Wandelweiser Records)
Label: Edition Wandelweiser Records    
Released in: Germany    

"Most composers who use mathematics to construct music do not intend it to be heard. Tom Johnson does. When he performed his piano cycle "Counting Keys" in Cologne in 1986 he began each piece by counting out its structure in numbers so that the audience could follow the logic of the music.

A particularly appreciative member of that audience was John Cage. One might wonder what the famous advocate of indeterminacy could find interesting in this exactly determined, highly predictable music, until one considers his favourite definition of art as the imitation of nature in her manner of operation. Much of what we see in nature, whether flowers, sea-shells, ice-crystals or patterns of growth and decay, is determined by mathematical processes.

The first piece in "Counting Keys" begins with a single high note. This is repeated followed by a 2-note cluster played twice, the whole being repeated followed by a 3-note cluster played three times, the process being repeated chromatically down the keyboard ending in the lowest register with a 12-note cluster played twelve times. The keys are literally counted. The effect is like an avalanche, beginning with a snowflake and ending in a pile of rubble at the foot of a mountain.

Over the years, the mathematics of Tom Johnson's music has become increasingly complex. "Organ and Silence", completed in 2000, is a cycle of 28 pieces for organ answering the challenge of composing music consisting more of silence than of sound. It is also a compendium of the compositional techniques he had developed up till then, from simple procedures like subtraction or permutation to the more sophisticated operations he refers to as automata and self-similar melodies. A consequence of the many long pauses it contains is the slowing down of the mathematical processes, making them much easier to hear. "Organ and Silence for Piano" is a reworking of eight of these pieces for piano made by the composer and myself in 2002.

"Tilework for Piano" is one of a series of pieces for solo instruments utilising the mathematics of arranging tiles in a single line along a wall to produce interlocking repeated patterns. In musical terms, if each tile is a note, motive or, as in "Tilework for Piano", chord, this means creating counterpoint with one voice. Imagine a row of 15 coloured tiles without gaps. There are 5 different colours; 3 of each. The same-coloured tiles are arranged in 5 equally-spaced interlocking triplets, each triplet having a different spacing. There is only one way to do this and this provides the basic structure of "Tilework for Piano". The triplets are first presented singly. Then every combination of 2 triplets is presented twice, every combination of 3 triplets three times and so on, until finally all 5 triplets together are presented five times.

The mathematical term "block design" comes from combination theory and refers to the distribution of a fixed number of elements into blocks of a fixed size according to specific combinatory preconditions. In "Block Design for Piano" the blocks are a sequence of 330 different ascending 6-note arpeggios. Their notes are taken from a fixed 12-note chord in such a way that every combination of four particular notes occurs 10 times in 10 different arpeggios. The 330 arpeggios are presented in 30 groups of eleven. Unlike most of Tom Johnson's compositions, the mathematical logic is not easily discernable. In an introductory text he sent me shortly after completing the piece, he commented on the difficulty of predicting the course of the music and wrote: "As I listen, I can imagine that I am hearing something derived from nature." Indeed, like the waves washing up on a beach, no two them identical yet all following the same unfathomable laws, this music has the inevitability and timelessness of the processes of nature.

Tom Johnson has written extensively about his compositional techniques. His writings can be found at"-John McAlpine

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Price: $12.95
In Stock


Shipping Weight: 2.00 units

Quantity in Basket: None

Product Information:

UPC: 4011778041610

Label: Edition Wandelweiser Records
Catalog ID: EWR 0901
Squidco Product Code: 21821

Format: CD
Condition: New
Released: 2009
Country: Germany
Packaging: Cardstock 3 page foldover
Recorded: Radio Bremen, Sendesaal, 14-16.2.2007


John McAlpine-piano
Tom Johnson-composer

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Track Listing:

1. Counting Keys: I 1:19

2. Counting Keys: II 1:53

3. Counting Keys: III 2:02

4. Counting Keys: IV 3:59

5. Counting Keys: V 2:00

6. Organ And Silence For Piano: I Before The Silence 3:14

7. Organ And Silence For Piano: II Around The Silence 3:39

8. Organ And Silence For Piano: III Within The Silence 4:22

9. Organ And Silence For Piano: IV Through The Silence 2:29

10. Organ And Silence For Piano: V Against The Silence 1:23

11. Organ And Silence For Piano: IV For The Silence 3:30

12. Organ And Silence For Piano: VII Toward The Silence 4:33

13. Organ And Silence For Piano: VIII Into The Silence 2:28

14. Tilework For Piano 8:13

15. Block Design For Piano 18:00

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