Music history redux

Brazil-based mashup maestro Butcher Billy has been featured on this site several times. His most recent offering is this clever, time-hopping photoshop experiment, which takes classic rock icons and juxtaposes their images with present day band t-shirts. The result is strangely jarring, and says a lot about how we perceive music and commerce.
Bands and musicians that became hugely influential in music history - would they, when alive or in an early stage of their careers, support the new acts that came decades after inspired by their own legacy? [link]