It is influenced by such diverse sources as bossa nova, French pop music of the 1960s, children's songs and musique concrète.
Seymour began musical experimentation during his high school years in the late-1990s, using keyboards and cassette tape recorders.
They soon became romantically involved and when Tomida's visa was due to expire, Seymour decided to return with her to Japan.
In the small apartment they shared in Japan, Seymour began composing music late at night while Tomida slept.
This was the origin of the name "Lullatone", which is also a reference to Raymond Scott's 1964 album Soothing Sounds for Baby.