Yeah, John Mayer is an awesome artist and most of the tracks of Continuum are easy to listen to/relaxing.
I often listen to Louis Armstrong, Jamie Cullum and some quiet songs by the Pogues but it all depends on what types of music you like.
Yeah I would change autocracy (one ruler) to oligarchy and monarchy to diarchy.
But if this whole 'DAM' thing has any benefit to getting good test marks I'm not entirely sure anyway.