Tongue in cheek

Routines are good to have. They're also fun to break.
Certain ways of doing things. A system, pattern,  dissipate.
Right and wrong, familiar song. A cadence change, broken up.
Ups and down. In and out. Set that hook and you're took.
Rhythms aren't always equal. Shows, often have sequels.
Build on a theme, expand the scene. Sell it and you have the people.
Entertainment we all enjoy. Professionals at their craft.
A change of pace, watch or maybe participate.
From the mundane to have a laugh. 
Once we were one, knowledge all. As above so below.
Manipulated, segregated. Return again, no longer small.