I'm a new bassist. Just got my first bass and taking lessons. I watch videos of John Myung, and it looks like his thumb is always anchored on his top string. Since he plays a 6 string, I assume that is the B string. On the other hand, I see a lot of finger style bassists anchoring their thumbs on the 4, 3 and even 2 string as they alternate bewteen strings. For example, I was taught recently that when you are playing the E string on a 4 string bass, that you anchor your thumb on the pickups. When you are playing the G string, you move down and anchor thumb on the A string. Now, having said that, I never see Myung's thumb drop below the B string on his six string bass. So my question is....is it OK to learn finger styles where your thumb stays on the pickups or E string(4 string bass)????