Santana with Neal Schon at Frost Amphitheater 1971
PALO ALTO, CA - MAY 23: The rock group Santana including guitarist Neal Schon (center, white pants) plays an impromptu concert on May 23, 1971 in Frost Amphitheater at Stanford University in Palo Alto, California. Percussionist Michael Carabello is visible to the immediate left of Schon; Carlos Santana visible at right on guitar, facing away. (Photo by David Madison/Getty Images)