Can Cat Stevens please launch a North American tour tomorrow? His three-song set was a surprise highlight of the Hall of Fame ceremony. The singer-songwriter's voice is preternaturally well-preserved – listening to him sing "Father & Son," "Wild World" and "Peace Train" (the latter with a gospel choir), you could have closed your eyes and thought it was 1971. Many things in his life have changed since then, but those earnestly searching vocals aren't one. Gerald Ford was president the last time Stevens did a proper U.S. tour. It's been long enough.