Electronic Music No.47 by William Lennox consists of 2 compositions No.47(a) and No.47(b).

The systems for these compositions were develop while working as a guest at the University of Miami Department of Mathematics.(1991)

The principles of these developments allowed for the construction of specific function units - dynamically coded - suitable for later implementation in FPGA systems.

This has recently been extended by use of Supera from within the composition in progress to request new SPFU's.