It makes sense that I should use a Brian Eno app to create the sound in my dissertation website. I've listened to his ambient albums as much as anything whilst I've been working on my dissertation.
Also, the apps created by Eno and Bloom are in themselves multimodal, with their combination of sound and visuals. So I'll use a multimodal app to create the soundtrack for my multimodal dissertation.
Maybe it's worth acknowledging this somewhere in the dissertation - probably the combined acknowledgements and bibliography section (which perhaps lends itself to a more interesting title than Acknowledgements and Bibliography).