Carlos Santana recovers after onstage collapse in Detroit. The US guitarist Carlos Santana has recovered after collapsing on stage during a concert in suburban Detroit on Tuesday. The audience was reportedly initially told of a serious medical issue and asked to pray for the 74-year-old musician, but Santana was treated swiftly and was seen waving to fans as he was wheeled off stage. He was taken to a local hospital for observation. He later thanked the audience for their prayers, adding on Facebook: “Just taking it easy. Forgot to eat and drink water so I dehydrated and passed out.” His manager said Santana had also suffered from heat exhaustion. A concert scheduled for Wednesday evening has been postponed. In December, Santana had to undergo a sudden heart procedure, and cancelled a series of performances at his Las Vegas concert residency. He returned to live performance in January.