Pianist and composer Dave Brubeck won legions of fans over a six-decade career with his complex rhythms and harmonies. His quartet's 'Take Five' was the first million-selling jazz recording.In the strait-laced Eisenhower 1950s, Dave Brubeck seemed, on one hand, deeply conventional. He didn't drink, smoke or take drugs. He favored expressions like "baloney!" and "you bet" over ruder alternatives.