It's a jam, jam it
In all honesty 99% of the stuff can be described in musical terms. Slow blues in C starting on the 5, A medium speed shuffle in A with stops etc.
At the jams I do (and work at) quite often someone will say a name of a song I've never heard before. I smile, nod and just get on with it. Much more fun than trying to play a faithful version of a record.