"Strange Whispers" is approximately fifty-five seconds long in Kingdom Hearts. In Kingdom Hearts HD 1.5 ReMIX, it is approximately fifty-six seconds long.
In Kingdom Hearts, the piece has a time signature of 4/4 and a tempo of 108 beats per minute. The piece does not have an introduction or conclusion, allowing for smooth transitions between loops. The instrumentation is consistent between games, except in Kingdom Hearts III. The standard instrumentation consists solely of strings- namely, cello, and stringed bass. However, in Kingdom Hearts III, the instrumentation includes: a strings section, synthesizer, female vocals, and use of haunting, drone-like sound effects.
Overall, the piece has a very ominous and eerie nature. In Kingdom Hearts III the "whisper" aspect of "Strange Whispers" is more audible in that actual female vocals are used. Regardless of the game, the cello maintains control of the melody. Underneath this sinister melody is an equally as offsetting drone played by the stringed bass. Additionally, the added sound effects and synthesizer in Kingdom Hearts III only heighten the tension and unknown.
