Justin: I suspect Ai Otsuka suffers from manic depression, if only because I don't have any other way to explain the striking dichotomy of her songs: they are either hyper-upbeat, almost gleefully demented power-pop, or vulnerable, ingenuous ballads whose productions are detailed with patches of lovely instrumental color.
Singles like 'Sakuranbo' initially made me hate her: her 'upbeat' voice is a hyperspeed nasal squeal that quickly grates upon repeated listening. And I'm the sort of person who gets a kick out of Kana (click link to check out previous entry about her) and Ai Kago's voices, so you know this is some serious shit. (I also lived next to a Japanese girl who would play 'Sakuranbo' constantly, so my patience was tested beyond endurance). Other songs like "SMILY" and "Pon Pon" continued the trend. To get an idea of whether you'd actually enjoy listening to this, please inhale helium and scream the following four lines as fast as you can, with a simplistic (okay, moronic) 'da-da-da de duh de da-da-da' melody.
PON PON PON PON PON PON PON PON PON
PON PON PON PON PON PON PON PON PON
PON PON PON PON PON PON PON PON PON
PON PON PON PON PON PON PON PON PON