As a Classical reading, Rain Tree Sketch II shows Takemitsu's craft at miniature scale: form made from timbre, spacing, and the relation between sound and silence. The opening at 0:01 does not present a theme in the usual declarative sense. It presents a listening condition.

The piece's modernity is quiet but exact. Around 1:13 and 1:34, line and tension gather inside a surface that still feels sparse. The material does not develop by broad contrast; it develops by making each recurrence change the weight of the surrounding resonance.

That makes the middle crest near 2:33 and 2:59 important. The piano remains a solo instrument with a limited surface, yet the harmony, overtones, and low weight create a field larger than the number of notes on the page.

The classical discipline is clearest in the ending. After 3:15, the piece loosens its own continuity, and after 4:14 it lets silence finish the cadence. The form does not close by force. It closes by returning sound to the space that made it audible.