quote:

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WASHINGTON - FBI file 100-HQ-370562 begins simply enough.

On July 21, 1950, the subject, thought "to be self-employed as a composer of music," is reported linked to communist front groups. Within six months, he is classified outright as a communist.

So begins the government's surveillance of Aaron Copland, one of the country's most important composers, creator of such stirring music as "Appalachian Spring," "Fanfare for the Common Man," "Billy the Kid" and the patriotic "Lincoln Portrait."

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For more click on the following link:

FBI Probed Composer Copland in 1950s

In the 60s his output pretty much dwindled to a trickle as he focused more and more on conducting.

Probably his proctologist. It'd explain quite nicely why Horner's work is such dreck.

As for Copland, not only was he investigated by the FBI, which compiled an inch-thick dossier on him, but he was called in to testify before Sen. Joseph McCarthy's closed-door committee -- which found and heard nothing that allowed them to accuse the composer of criminal or seditious activity, though tyey did debate citing him for perjury for denying that he was ever a Communist (of which there was, and is, no proof).