I think that I maybe already posted this once, but I think that I should do it again. This song is just truly beautiful.. And to think of it, first Bleach OST had the best emotional soundtrack while the later ones have the best battle soundtrack.

For this one, it is done on violin. Just listen how the intensity grows and how it becomes deeper and deeper for you and your soul. This is what I call an OST and how it should be in similar animes and even more in Bleach itself (at least for this part). The most famous Bleach song, enjoy~!