Image via Wikipedia In your opinion:
Which Rock Frontmen are irreplaceable?
I'll explain what I mean. An irreplaceable frontman is a lead vocalist that, upon leaving the band, causes the band to lose its popularity without him.
For example, David Lee Roth is replaceable because Van Halen did fine without him.
What would have happened if Robert Plant, Mick Jagger, Roger Daltrey Jim Morrison, or Bono left their perspective bands for a solo career?
Which bands have lost their lead vocalist and become less successful?