Very little is known about Seileen. Started by Selia and SiSeN in 2005, they have performed many times in Europe in conjunction with Tokyo Decadance.
Some of the group's music is supported by keyboardist KALM (ex-VELVET EDEN) and other guest contributors. In April 2009, they released their first mini-album titled Kinjirareta asobi. The following year at the end of January and beginning of February, they toured the USA for the first time with GPKISM.
Despite the fact that not much is known about the group, they are well-known due to the popularity of each individual member. As a unit, they create a fantastical aura that compels any listener to move to the music.
