Is there anything specifically "American" about Copland's Piano Variations?

What kind of instruments are used in the beiguan ensemble heard on CD 2:13? What kind of music does this ensemble perform? {au to ed: be sure to reference the instrumental NOT the vocal version.}

What will be an ideal response?

Music of early electronica was done in the studio by anonymous creators; they produced music that

was:

a. largely instrumental b. full of sampled vocal tracks c. reminiscent of the rock era's lead singer or lead guitarist d. known for creative bridges