Rock Legend Roger Waters Teams Up With Wounded Veterans And finally tonight a true band of brothers, some of america's wounded veterans joining forces with a rock and roll legend, music that can raise you up, all part of an event close to the heart of abc's bob woodruff, the veterans making sure their voices are heard. Reporter: If anyone needs the healing power of music -- &#9834; &#9834; Reporter: It is these men, wounded on the sands of iraq and afghanistan. My life has just blown up in every sense of the word. Reporter: Their general now, concert pianist arthur bloom. There are an increasing number of studies that show that music heals. They're using new bodies to heal old wounds. James biler lost both legs and two fingers. It was fantastic therapy. I did it all the time in my room. I would say I'm a better guitar player now than I was before. Remember how we end it. Reporter: When roger waters of pink floyd learned about music cord last year he decided to create the band. A lead singer, triple amputee, tim donnelly. Roger said you're a better singer than he is. Not true at all. I'm okay. &#9834; &#9834; Reporter: Last week they took to the stage before almost 6,000 people at a stand up for heros benefit where we raised more than $5 million. A band of brothers finding their voice. Bob woodruff, abc news, new york.