It was only after the composition of the work, that the titles of these four sound « sources » (“founts”) became obvious, as evocative reflections of their poetic atmosphere.
« Rustling », moderate allegro is a series of murmurs moving forward in a constantly changing harmonic backcloth. The hesitant end is almost a whisper.
« Lascivious », very expressive largo, first listens to the teasing sensuality of the soloists’ timbres, before eventually letting the oboe sing in a soft and languorous polyphony.
« Furtive » is a very brief, fanciful scherzo, where the lines take flight, constantly alternate, before finally embracing in a polyrhythm….fugitive.
« Outburst », an extremely fast moving presto, bears some kind of resemblance to the refrain-couplets style. The refrain, always varied but characterised by a continuous succession of quavers, frames several couplets where each, in its own particular style, gives rise to the spirited driving force.