"America" is actually a simple switching between 6/8 and 3/4 thus creating a false hemiola, or a sense of 2 against 3. It is not in a complex meter.
"I like to be in a" functions as 2 beats in 6/8 while "mer-i-ca" is three in 3/4.
So really, it's just Bernstein being crazy and brilliant that makes this music sound more complicated than it is.
(edited for incorrect word - compound as apposed to complex)
Updated On: 7/1/08 at 02:38 PM