Billy Joel and Elton John might seem to have a lot in common to the average rock music fan. After all, they're both famous pop stars who have been making hits for decades. Less well known to the general public is that they both rely on Steve Cohen to design, direct, and help to produce their tours. Having worked with Joel for 24 years and John for the past five, few people are as qualified as Cohen to point out the differences between these piano men.
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