  Reading, much like music listening, is an immersive experience that
transports readers while taking them on an emotional journey. Listening to
complementary music has the potential to amplify the reading experience,
especially when the music is stylistically cohesive and emotionally relevant.
In this paper, we propose the first fully automatic method to build a dense
soundtrack for books, which can play high-quality instrumental music for the
entirety of the reading duration. Our work employs a unique text processing and
music weaving pipeline that determines the context and emotional composition of
scenes in a chapter. This allows our method to identify and play relevant
excerpts from the soundtrack of the book's movie adaptation. By relying on the
movie composer's craftsmanship, our book soundtracks include expert-made motifs
and other scene-specific musical characteristics. We validate the design
decisions of our approach through a perceptual study. Our readers note that the
book soundtrack greatly enhanced their reading experience, due to high
immersiveness granted via uninterrupted and style-consistent music, and a
heightened emotional state attained via high precision emotion and scene
context recognition.
