Up until recently, reading practices have been hard to map, especially if one is interested in investigating larger patterns. Robert Darnton once famously claimed: "Reading remains the most difficult stage to study in the circuit followed by books." With the emergence of digital reading data, however, this is about to change. In this talk, Karl Berglund will show how data from the commercial book streaming platform Storytel can be used to track audiobook reading practices simultaneously at scale (~430,000 readers) and in detail (per hour). By investigating nearly 75 million logged sessions of book streaming during one year, Karl Berglund analyse how the current boom in streamed audiobooks are affecting our contemporary book and reading culture.