A student of the original author finished this book and published in September 2018, according to this website: https://www.euterpea.com/haskell-school-of-music

A student of the original author finished this book and published in September 2018, according to this website: https://www.euterpea.com/haskell-school-of-music/ https://www.euterpea.com/haskell-school-of-music/ Besides, the second author also wrote: > Please do NOT make these files publicly available, as it has created confusion over what is actually in the published book.