keith moon fatally overdosed in 1978. >> i wish we could have saved him.ow about drug abuse and rehab and all that, we might have done better. >> reporter: a cocaine-fueled heart attack claimed bassist john end whtwhistle in 2002. that left daltrey and townshend, who don't see each other all that much. >> after half a century of working closely with this guy, it's never ring him up and go get a beer and talking about life? >> we didn't have that kind of relationship. we did in the early days, used to go fishing, play golf. >> is any of that part sad? >> i had it once. if he ever wanted it again, he would make an approach. i don't want to play golf. i'd still go fishing. >> reporter: still, the two remain linked by something other than their music. so where are we? >> well, this is the first teen cancer hospital america ward that we managed to get ucla. >> reporter: for decades, daltrey and townshend have given their names, money and time to building teen cancer units in hospitals across the uk, and now america. >> nice to meet you. >> how are you, young ma