PHILADELPHIA (CBS) — While Coldplay was in town for the Made in America festival this weekend, the band’s lead singer took some time to say hello to some young patients at CHOP.

One of them was 12-year-old Luke Theodosiades who is fighting leukemia and recently had a bone marrow transplant.

Chris Martin stopped by his hospital room and talked with the young boy and his family.

“Luke wasn’t having such a good day, it definitely changed his mood,” explained the LUKEstrong Facebook page, updating the public on the young boy’s progress. “Chris Martin is such an awesome guy. Sat on the floor and just talked about anything [and] everything.”

Luke and his family also got a few pictures with Martin to remember the awesome surprise.

This past February, Luke and other CHOP patients got another special visit from Carrie Underwood who was in town to play at the Wells Fargo Center on her Storyteller tour.

The LUKEstrong Facebook page says Luke will be in the hospital for a few more weeks to allow his body to accept the transplant donated by his brother, Nikolas and allow for the bone marrow to continue to grow.