I think feel is something that will develop with practice and with the passage of time. At 14, he doesn't have the richness of life experience to properly inform his blues playing. When I compare our two lives, I shudder at the thought of him being exposed to the things which shaped my early teen years. So, I guess I'll have to settle for him learning the skills side of the equation now, and picking up the rest as he goes.
For the reasons above, I disagree as to whether blues is a good choice of genre. Some experience the blues before they play them, while others play the blues before they understand what they are all about. As long as he can eventually put the two pieces together, he should be fine.
An example of what I am talking about would be Clapton. In the mid-60s, he had great blues technique, but was just a white, British, ex-art school kid who copied the blues greats of America. Later, he merged the technique with the feel, and greatness evolved.
I can see, and accept your point. I suppose my main point was that to become an accomplished bassist, a person should let the music dictate what bass lines are required. Some types of music requires more complex lines, but as a general rule, blues works on the "less is more" concept.
I appreciate that your son is only 14 years old, and will, no doubt, in time, come to realise this.
Good luck with the project.
