INTJs and ENTJs share the same cognitive functions, so it’s not always easy to tell them apart. Generally speaking, what goes for one will also go for the other, to some
ENTJ musicians are not especially common. It took some searching, but I’ve found one: Gene Simmons of KISS. Gene has often been mistyped as ESTP, due to his hedonistic image, and propensity for self promotion (traits that have sometimes been associated with ESTPs, who use extraverted sensation and introverted thinking as their primary functions).