In 1969 Edgar was contacted by Radio Netherlands to take part in series of special recordings for the transcription service. While Radio Netherlands Transcription Service had been releasing Dutch jazz for sometime. This was however the first ever recording session made at the Radio Netherlands studio in stereo.
Studio 11 had been re-fitted with the latest Philips and Telefunken equipment.
This session was recorded on June 6, 1969 and was taken from the original 4 track 15ips (ips - inches per-second) studio master.
None of the sessions that took part of that date were ever made available commercially.