Rock and guitar greats Eric Clapton and Steve Winwood formed Blind Faith in 1969. While the group was short lived, the two have remained great friends, but have only performed together a few times. Now, on the 40th anniversary of Blind Faith, the two guitarists perform their individual hits and some compilation work. June 18, 8 p.m., Xcel Energy Center, St. Paul, xcelenergycenter.com.