The group described a potential €5.3bn of savings, including 17,300 public service job cuts and a 5% cut in social welfare.
A further group describes the behavior against environmental conditions such as fire, water and humidity.
Only one group described plans to create a presence during the presidential parade.
Both leaders said later that the group had not described its proposal, except in the most general terms.
In a statement, the group described the test as a "relatively trivial step."
The group describes the fill as "a love letter to the fans".
The two groups describe their findings in today's issue of the journal Nature.
The group has described this particular style of music as Vikingarock.
Later the group described the exercise as a test of free speech and said they would take no action on state property.
The group did not describe the source's position or responsibilities at the prison.