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In page Anime:

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Early anime works were made for theatrical viewing, and required played musical components before sound and vocal components were added to the production. In 1958, Nippon Television aired Mogura no Abanchūru ("Mole's Adventure"), both the first televised and first color anime to debut.[1] It was not until the 1960s when the first televised series were broadcast and it has remained a popular medium since.[2] Works released in a direct-to-video format are known as "original video animations" (OVAs) or "original animation videos" (OAVs); and are typically not released theatrically or televised prior to home media release.[3] The emergence of the Internet has led some animators to distribute works online in a format called "original net animation" (ONA)[citation needed]