Just in case you get into Austin early for the Saturday Town Lake Kids' Show (and, no, folks, "Mastodon" is most definitely not a kids-friendly band about dinosaurs), you can also hear Uncle Rock (or at least his real alter ego, Robert Burke Warren) on a panel discussing kids' music. Also on the panel, rock journalist Holly George-Warren (the panel's big draw, who has also written a kids' book on country music and happens to be Robert's wife), and a Razor & Tie label representative.
I do hope, at the very least, that at least the panelists will refrain from using the phrase "junior hipster."