Gamasutra features article about ANMA

ANMA was one of the most famous Dutch demo and game groups from the 90's. Both their demos (Squeek promos, The Source of Power, Relax and many others) and their games (Squeek, No Fuss, Nosh, Frantic and Troxx) were very popular in their days due to their technical merits and unique artwork. Gaming website Gamasutra features an article about this group with lots of background information about the rise and fall of ANMA. Most of the article is about their games though, rather than their demos. If you like MSX scene nostalgia however, this is an article you shouldn't miss.

Relevant link: The Story Of ANMA: Two Schoolboys And A Game Development Dream