This was the 2nd year that I've ran the Rhythm and Blues Half Marathon. The race itself is in its 4th year in Houston (they're doing their first Dallas race this year as well). The race organizers do a great job with the race and I was able to PR by 2 minutes with a 1:35. Here's a summary of my experience:

Pros: 5 live bands along the race course, good route (double loop that takes you past each band 4 times), great SWAG, perfect sized race (~2,000 participants), short port-o-toilet lines

Cons: Anticlimactic start (no national anthem or even a gun, just one person counting down from 10 that we couldn't hear), so-so post-race food and 1 beer limit

Overall, I'd recommend the race as a fun, local option. If you'd like to hear more about the 2015 race, I have a full review on my blog: http://www.pathtotri.com/2015-rhythm-and-blues-half-marathon-race-review/