Guitarist Carlos Santana reportedly passed out on stage while performing at the Pine Knob Music Theatre in Michigan.
The musician, who performed with the band Santana on hits such as Smooth, was mid-set on the band's Miraculous Supernatural tour on Tuesday when he is said to have collapsed.
Medical personnel reportedly came to the aid of the 74-year-old with the crowd being asked to pray for him, according to Fox 2 reporter Roop Raj.