Even there, he does really bring the low, middle, and high registers together; these are some sorry transitions. He is, on the other hand, an excellent blues singer, based on this sample. To be fair, though, this video is some years old, and it seems that Popper has learned something about blues phrasing, as in his recording of "Last Night" with Johnny Winter. He allows space to sculpt his solo. His fleet runs on the high end are not as frantic; they are shot, sharp bursts, and dead on target. It is a wonderfully chilling sound. Popper's low-end execution is not the best - when he plays blues, he often sounds like he's unsure where the second, third or fourth notes are. He doesn't come to them with the intuitive ease he shows with his high register riffing. Even so, his high-end escapades don't connect with anything going around him, or just barely, if at all. The solo is a mess. But he does great stuff on the Johnny Winter track--there are years between the recordings, and what Popper does throughout the improvisation is show us that he figured out how to play blues in his own style, with his signature runs, and still have it be blues. Toward the end of the solo, he gives us a masterful flurry of notes that speed by yet maintains a blues cadence. He knows what he has to do. So there is hope for this man to get his share of blues credibility.