Since recording is not a possibility for me, I replaced the recording instruction with writing. The flute begins with a theme, then that theme is played in retrograde while the oboe offers its own theme. As the clarinet enters with its theme the flute repeats what it has already played and the oboe begins a retrograde of its theme. Finally the bassoon enters as the oboe replays what it has played and the clarinet plays a retrograde of its theme.
To break things up an interlude is presented, which is then played in retrograde. Following this the bassoon plays a retrograde of the clarinet’s theme, accompanied by the clarinet playing the interlude theme. This idea is repeated as the clarinet, oboe and flute play retrograde themes of other instruments and the piece finally ends.
Much easier is simply listening to the piece for what it is without the distraction of the explanation.
Retrograde was written for Flute, Oboe, Clarinet, and Bassoon.
The score is available at http://bit.ly/38YgJMX