LOS ANGELES — Jon Bon Jovi had a surprise opening act at Friday’s MusiCares Person of the Year concert in his honor: Jon Bon Jovi. It was only the second time in memory at the 33-year-old fundraising event — an annual prelude to the Grammy Awards — that the Person of the Year honoree was also the first performer of the evening. (The first came when Paul McCartney was honored in 2012.) But Bon Jovi, backed by the band that bears his name, had another trick up his sleeve at the start of the two-hour-plus show at the Los Angeles Convention Center. After kicking off the night with his rousing new …
