Hiroyuki Sawano spices classical numbers with rock and synths. And as one of Japan's most prolific artists, his pieces—often featuring copious strings and rich choral elements—have soundtracked dozens upon dozens of anime and TV shows. His distinctive sound, which drops chugging guitar riffs and bubbly keyboards into more classical compositions, thrives on a hint of the unexpected. Sawano also loves teaming up with fellow musicians, such as singers Aimer and Yosh, to create slow-burning, dramatic numbers that send his collaborators' voices soaring into the rafters.