"So You Say" is the second and final single taken from Siobhán Donaghy's second and last to date studio album, Ghosts.

Siobhán first previewed the song on 24 March 2007 where she sang an acoustic version on Capital FM.

The single charted at #76 in the United Kingdom, due to a lack of promotion.

The music video sees Siobhán walking through a mysterious house filled with winding corridors, and entering various rooms whilst following a strange man named "Adam".

Near the end of the video, Siobhan confronts "Adam", who seems to be almost "possessed" with his eyes and mouth glowing.