Stylistically, Love Psychedelico is highly reminiscent of the British Invasion of the late 60s, both members having cited The Beatles and Led Zeppelin as influences, though the influence of American folk and blues are also present (Kumi having claimed Janis Joplin and Sheryl Crow, and Sato Bob Dylan, as influences). To pay tribute to their influences, Love Psychedelico sometimes borrow song titles from the bands that influence them.

Kumi's lyrics are a mix of English and Japanese, a phenomenon common to popular Japanese music, but uncommon in that significant amounts of the English lyrics are comprehensible and well-crafted, rather than simply employing a few catch phrases as so many J-pop idols tend to do. Kumi often attributes her English language proficiency to her early childhood in San Francisco.