経塚泰誠 (Kyozuka Taisei), simply known as たいせい (Taisei), is the keyboardist in the rock band Sharam Q, and is also an arranger, composer, and recording director for the UP-FRONT WORKS label. Taisei is currently the main recording director for ANGERME and Juice=Juice. He used to work on recordings for Melon Kinenbi, Mano Erina, and SATOYAMA & SATOUMI movement songs. Until 2006, his stage name was originally spelled as Taisee (たいせー).

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