The following musicians you have likely never heard of are Jewish (whether my source followed halacha, I don’t know…):
Alex Skolnick
Ben Weinman
Eric Bloom
Donald Brian “Buck Dharma” Roeser
Joey Kramer
Leslie West
Steven Adler
Jay Jay French
Adam Dutkiewicz
David Draiman
David Lee Roth
Evan Seinfeld
Geddy Lee
Jordan Rudess
Gene Simmons (okay, you might have heard of him)
Paul Stanley
Marty Friedman
Mike Portnoy
Scott Ian (Rosenfeld)
Tracy “Tracii Guns” Richard Irving Ulrich
Dee Snider