Overview
I've Sound, or simply called , is a Japanese techno/trance music production group based in Sapporo, Hokkaidō, Japan. Led by Kazuya Takase, it features the talents of seasoned "sound creators" and many different vocalists, known as to their fans.
They have created the theme songs for many Japanese adult games, most famously the opening "Tori no Uta" to the visual novel Air by Key. More recently, they have been creating the theme songs to anime series. Among anime fans, I've Sound is well known for providing the theme songs to such series as the Please! franchise (Please Teacher! and Please Twins!), Kanon, Air, Kannazuki no Miko, Black Lagoon, the Shakugan no Shana series, Starship Operators, Higurashi no Naku Koro ni, the Hayate the Combat Butler series, Nanatsuiro Drops, A Certain Magical Index, Rideback, Sky Girls, High School DxD, Jormungand, Tokyo Ravens, To Love-Ru series, Waiting in the Summer, Nagi-Asu: A Lull in the Sea, Aokana: Four Rhythm Across the Blue and Girly Air Force.
History
I've was founded in 1998 by members of the six-member Takase Fight. During this time they produced music for tsushin karaoke and adult game brands based in Hokkaidō. They also made two tracks for the Dancemania series, "If You Were Here" by Jennifer and "Is This The Way You Kill A Love" by Gina, both featured in Dance Dance Revolution.
They first assumed the name "I've" while working on the eroge Lips: egao no yukue in the autumn of 1998. Although production for the game was later cancelled, they were able to establish ties with Visual Art's, a computer game and software maker that most of I've's subsequent works are released under.
From Wikipedia (CC BY-SA 4.0).