This must be the epitome of French progressive rock, a (mostly) languid song made by piano and organ on top of the usual rock instrumentation. There is a short fast/noisy bit just before the middle that jars a bit, but basically you want to just lie back and relax while listening to this track, it's so mellow and lovely. Also recommended: "St. John's Avenue" and "The Gulf Of Knowledge" from their second LP "Windows".