These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Awesome Music: "The Dumbing Down Of Love", "Old Piano"... let's just say all of it.
Covered Up: "Maddening Shroud" was originally a 1994 song by a band called Acacia, which Imogen and Guy were a part of. It was re-recorded for Details.
Ear Worm: "And I'm high enough from all the waiting, to ride a wave on your inhaling. And I'm high enough from all the waiting, to ride a wave on your inhaling, 'cause I love you, no, can't help but love you, no." "Breathe In" is one damn catchy song.
Face of the Band: Imogen Heap. Seems to be partly deliberate, since in the album artwork Guy appears in the background and with his back to the camera.