A potential bone marrow donor at a concert in Vail takes a cheek swab to see if he's a match for someone who needs a transplant.

(Photo: Courtesy of Love, Hope, Strength)

Rock concerts are helping save the lives of people with conditions like leukemia and lymphoma. 

A nonprofit organization based in Denver is setting up booths at venues across the country, asking concert-goers to be donors. If they agree, they get a quick cheek swab and, if their swab matches a patient who needs a transplant, a follow-up phone call to arrange the organ donation.

The group called Love, Hope, Strength has been matching donors to recipients for seven years, making 200 matches at Red Rocks Amphitheatre alone.