Ondes Martenot
Shimizu has written music for several horror projects. She was the composer of the television series ‘’Gakkou no Kaidan’’ (School Ghost Story)’’ with Gary Ashiya. Following this series, both musicians composed for the PlayStation 2 title ‘’Siren’’. In 2008, Shimizu was the sole composer of the PlayStation 3 sequel ‘’’’. The new title features an arrangement of the Siren main theme played on an Ondes Martenot by musician Wakana Ichihashi. The song is voiced by singer Yula Yayoi.