Conversation so far:
who wrote the song mamas don t let your babies grow up to be cowboys
Mammas Don't Let Your Babies Grow Up to Be Cowboys is a country music song first recorded by Ed Bruce, written by him and wife Patsy Bruce.
what's the song Mammas Don't Let Your Babies Grow Up to Be Cowboys about
The narrator warns mothers not to let their children become cowboys because of the tough and busy life of cowboy culture.

Question: when was the song released
Self-contained rewrite: when was the song Mammas Don't Let Your Babies Grow Up to Be Cowboys released