Hikaru Utada's "First Love" may have sold more copies, but it's hard to think of a Japanese album from the 1990s that has endured like "Fantasma." Keigo Oyamada was 28 years old when he released his third full-length as Cornelius in 1997: a dense collage of polychromatic meta-pop, full of improbable genre collisions and loving nods to its creator's wide-ranging record collection.