Nine-year-old Xabi Glovsky attended the Bruce Springsteen concert in Los Angeles Tuesday night with his dad, Scott, when he got the get-out-of-jail-free card of a lifetime. The young rocker caught The Boss’ attention during the show by holding up a sign that read, “Bruce, I will be late to school tomorrow. Please sign my note. :)” And Springsteen did.

“Although there were many musicians and celebrities at the concert, we were the first people to see him after the show,” Scott told the Clairmont Courier. “Bruce said ‘There’s the big guy’ to my son.”

As his dad described, Zabi sat next to Springsteen on a couch backstage and scrawled this note on a piece of paper: “Dear Ms. Jackson, Xabi has been out very late rocking & rolling. Please excuse him if he is tardy.” He posted photos of the interaction on Twitter.

Scott says he’s been singing Xabi to sleep to the tune of Springsteen since he was born, and he took him to one of his concert’s in 2012 for Xabi’s 6th birthday. The father-son duo caught the musician’s attention back then, too, with their b-day sign.