Being able to play Talk music is a necessary skill if you want to back up speakers (most commonly in church). There are a few fundamental basics that I use in my approach to playing talk music.
Those fundamentals are:
Energy-how dynamic is the speaker?
Pacing-free flow vs cadence vs pedaling
Following-how I approaching blending in and matching the mood of the speaker.
In the following video I go over these concepts in a brief overview that should help you in figuring out how to be more effective and decisive when it comes to playing talk music.