All twenty-six exercises, recorded in the author's voice, are available for
purchase as either a boxed set of six Audio CDs or as a single MP3 CD. The
Audio CDs are suitable for use with any standard Audio CD player. The MP3 CD
is suitable for use with an MP3 CD player. For those with the technical skills
required the exercises may be transferred to an MP3 player.
What's that hissing sound?
A low level pink noise signal is recorded with the voice on these CDs as a mask
for outside sounds and as a background, randomizing source.