Brubeck's time experiments went way beyond 5/4. For example, "Unsquare Dance" was in 7/4. The talent in the Dave Brubeck Quartet...Gene Wright, Joe Morellos, and Paul Desmond extremely talented. Brubeck's work with them, while not always the favorites with critics, was popular with both the jazz, and non-jazz audiences.
His drummer, Joe Morello, was a brilliant master of time. Some complained he had no "passion", but was technically nonpareil. Desmond wrote several of the "time" pieces on the several "Time" albums..."Time Out", "Time Further Out", "Time in Outer Space", and others.
His son is a very talented musician in his own right.
Brubeck made as real contribution to the American musical form... under appreciated in this country.