Audiobooks have seen an explosion in popularity and are on their way to challenging books and e-books as publishing's top medium.
The audiobook has been the fastest growing sector of the publishing industry for the past four years.
There are two driving factors to this sudden popularity.
One is the movement of the audiobook from cassette tapes to mp3, accelerated by online services like Audible.
The Amazon-owned e-book platform claims its customers listened to a staggering billion hours of e-books in 2017.
The second is the omnipresence of modern smartphones.
The availability and memory-power of smartphones means it's easier than ever to download e-books onto your phone.
This means the medium is now available to anyone, anywhere, at any time and a reasonable price.
