Lots of people would do, just for liking, as if they were facilitators of the verses sessions and those who fix the subject to the people singing verses. There are also professionals, that even put at everyone´s disposal they work they make. There is a corpus with a lot of subjects, explaining how to fix the subjects, how many are required for a session... In Unai Elizasu´s blog, there are lots of things to see and to learn.
How many subjects are required if we have six bertsolaris? How much time should the session last? Advices about structures. How should we do it at dinners were verses are sung? In the verses schools, it is hard to invent subjects...
Here is the solution: www.gaijartzailea.com
And much more than the mere contribution of subjects! More than making a list with the subjects that are being fixed, there are valuations about the sessions. Besides giving the chance to inform, he will also like to receive opinions.
It is a specialized blog, personal, complete and open to contributions.