Just located an article by James Dacey on the physicsworld blog (2009) that says that Apollo astronauts took country music into space (see http://blog.physicsworld.com/2009/07/23/moonrockin-the-science-museum/).
The blog states: "In 1980 Eno worked with his brother Roger and Canadian guitarist Daniel Lanois to create the ambient album Apollo. Inspired by hearing that some of the astronauts on the Apollo missions had taken recordings of country music with them into space, Eno set out to record a concept album of "zero-gravity country music."
I'd like to hear that. The full name of the artist is Brian Peter George St. John le Baptiste de la Salle Eno.