Among rock musicians of the late 20th century, tell me which of the following are singers or drummers: Bon Scott, Tommy Lee, Sebastian Bach, Robert Mason, Phil Rudd, Alex Van Halen, Mick Brown, Klaus Meine, David Lee Roth, Rob Halford
Bon Scott - Singer
 Tommy Lee - Drummer
 Sebastian Bach - Singer
 Robert Mason - Singer
 Phil Rudd - Drummer
 Alex Van Halen - Drummer
 Mick Brown - Drummer
 Klaus Meine - Singer
 David Lee Roth - Singer
 Rob Halford - Singer