Iwashiro has composed the music for many Japanese television series and films. He has composed for both Red Cliff films, Shinobi: Heart Under Blade, Azumi, The Prince of Tennis, Rurouni Kenshin: The Motion Picture, and the Korean film Memories of Murder. He was also lead composer for the Capcom video game Onimusha 2: Samurai's Destiny. Iwashiro has often led the Tokyo Metropolitan Symphony Orchestra for his soundtracks, including the 2005 taiga drama Yoshitsune and 2008 film Red Cliff.
- Rurouni Kenshin: The Motion Picture (1997)
- The Dog of Flanders (1997)
- Aoi Tokugawa Sandai (2000)
- Memories of Murder (2003)
- Spring Snow (2005)
- Sinking of Japan (2006)
- Red Cliff (2008)
- Shodo Girls (2010)
- Fullmetal Alchemist: The Sacred Star of Milos (2011)
- Rengō Kantai Shirei Chōkan: Yamamoto Isoroku (2011)
- Our Homeland (2012)
- Ask This of Rikyu (2013)
- Gargantia on the Verdurous Planet (2013)
- Unforgiven (2013)
- Kiki's Delivery Service (2014)
- The Crossing (2014)
- The Heroic Legend of Arslan (2015)
- Kado: The Right Answer (2017)
- A.I.C.O. -Incarnation-
- Uma Musume Pretty Derby (2018)
- Aircraft Carrier Ibuki (2019)
- The Journalist (2019)
- Fukushima 50 (2020)
- Mother (2020)
- Yakuza and the Family (2021)
- "Crunchyroll to Simulcast "KADO: The Right Answer" Anime UPDATED". Crunchyroll. Retrieved 2017-04-11.
- "A.I.C.O. -Incarnation- Anime's Promo Reveals Cast, Additional Staff, March 9 Debut". Anime News Network. January 10, 2018. Retrieved January 15, 2018.
- "ヤクザと家族 The Family". eiga.com. Retrieved February 15, 2021.
- Official website (in Japanese)
- Taro Iwashiro at IMDb
- Taro Iwashiro at Anime News Network's encyclopedia
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