Giza Studio is a Japanese record label, music production company and music publisher based in Osaka, founded in 1998 by music producer Daiko Nagato. Giza's artists have provided numerous opening and ending themes for Anime television series such as Meitantei Conan, Project ARMS, MÄR and Tantei Gakuen Q.

B ZONE Incorporated, formerly known as Being Incorporated, is a Japanese private entertainment conglomerate and recording label based in Tokyo's Roppongi district, founded on November 1, 1978 by music producer Daiko Nagato. The company and its subsidiaries are the main supplier of theme music for the anime series Detective Conan. As of May 2023, over 130 theme songs have been supplied to the anime television series and movies by the B ZONE Group. On 4 April 2023, Being changed company name to B Zone.