I remember the glee with which I received this recording when it was first released on LP. I had already heard John Tilbury play the work at Ronnie Scott's Club in Soho, so knew what a master he was of these 20th century reflections of the classic Scarlatti sonata structure. The transfer is very good. The sound much clearer than that on the LP. The timbres are very well captured and with Tilbury, the tuning of the preparations is so much more enticing than on some recordings where the ruler has been the determining factor in the placing of the mutes. He takes Cage's measurements as his guide, but his ears are the final arbiters.
The one minor annoyance is that the track division error which characterized the original appearance on CD (Decca Japan) remains in this issue. Track 14 starts about 25 seconds before the end of the 10th Sonata, and Sonata 11 therefore commences 25 seconds into that track. No problem if you listen straight through, but is you want to listen to just Sonata 10 or 11, there is no easy way to programme either of them. Put up with this little inconvenience though. The performance is well and truly worth it.