Posting this before reading the article :- Back in circa July 2016 I was fascinated with both Shazam and Prisma, with the latter being newly launched and being

Posting this before reading the article :- Back in circa July 2016 I was fascinated with both Shazam and Prisma, with the latter being newly launched and being quite the rage on the internet. I found a paper which described how Prisma worked (believe that was released by the makers themselves), but Shazam remained elusive. This post should get me upto speed. PS - kindly correct me if I am grammatically wrong anywhere _ /\ _