^ I actually sometimes wonder if Kajiura-sensei formed Kalafina in mind with the intentions of eventually having Hikaru and Maya do the main singing whilst Keiko and Wakana were there more to provide the high and low harmony and background chorus parts, because those two are already in FJ, so with Kalafina being a separate group it'd make sense that the main focus would be the non-FJ singers to avoid it becoming basically a half-FJ clone...e.g. in sprinter, where Hikaru and Maya sing most of it, and Wakana and Keiko didn't have as prominent parts...and for example, in lives if Hikaru and Maya had been doing most of the singing, it'd be easier for Wakana to take Yuriko's parts rather than having the backing tracks etc.