Santana was well into his show at the Pine Knob Music Theater, about 40 miles northwest of Detroit, when he sat down on a drum riser and fell backwards.
He was treated by medical personnel for roughly 20 minutes, while the crowd was told to pray for him.
But he waved to the audience as he was taken by stretcher to a local hospital, where his management said he was doing well.
Santana’s won numerous Grammy’s since he burst into the national consciousness with a searing mix of rock and Latin music at the original Woodstock festival.
In December the 74-year-old underwent an unscheduled heart procedure, but was soon back on stage, and has been touring for several months.
