Takemitsu's words here highlight his changing stylistic trends from the late 1970s into the 1980s, which have been described as "an increased use of diatonic material [... with] references to tertian harmony and jazz voicing", which do not, however, project a sense of "large-scale tonality". Many of the works from this period have titles that include a reference to water: "Toward the Sea" (1981), "Rain Tree" and "Rain Coming" (1982), "riverrun" and "I Hear the Water Dreaming" (1987). Takemitsu wrote in his notes for the score of "Rain Coming" that "... the complete collection entitled "Waterscape" ... it was the composer's intention to create a series of works, which like their subject, pass through various metamorphoses, culminating in a sea of tonality." Throughout these works, the S-E-A motive (discussed further below) features prominently, and points to an increased emphasis on the melodic element in Takemitsu's music that began during this later period.