I knew who would be teaching the class well ahead of attending it. Luckily I wasn't the only one in the class as I was, at first at least, far too afraid of him to really talk unless talked to. During the year that I was his student I did eventually come to know him more as "my guitar teacher" than "rhythm guitarist of COB" and thus realized that talking would not actually kill me . He didn't really talk about COB though he did play a few riffs and melodies (We would have played the TDE intro melody but one of us had only 22 frets making it impossible and I remember him playing the HCDR pre-chorus and saying that it is a great riff though we never played it as a class (Drop tuning perhaps? Can't remember)).