Waylon Jennings and Willie Nelson's Iconic Duet Topped the Charts 48 Years Ago

The outlaw country legends' version of "Mammas Don't Let Your Babies Grow Up to Be Cowboys" won a Grammy and spent four weeks at No. 1.

Published on Mar. 11, 2026

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On March 11, 1978, Waylon Jennings and Willie Nelson's duet "Mammas Don't Let Your Babies Grow Up to Be Cowboys" reached the top of the Hot Country Songs chart, where it stayed for four consecutive weeks. The song, which won the Grammy Award for Best Country Performance by a Duo or Group with Vocal in 1979, was originally written and recorded by Ed Bruce in 1976 before Jennings and Nelson teamed up to create the most successful version.

Why it matters

Jennings and Nelson's collaboration on "Mammas Don't Let Your Babies Grow Up to Be Cowboys" is considered a landmark moment in outlaw country music, showcasing the pair's iconic status and the enduring appeal of their signature sound. The song's solemn warning to mothers has resonated with country music fans for decades.

The details

Ed Bruce initially wrote "Mammas Don't Let Your Babies Grow Up to Be Cowboys" and recorded it in 1976, but it was Jennings and Nelson's duet version that became a major hit. Jennings had already recorded a solo version of the song, but he wasn't satisfied with it. He then brought the song to Nelson, and the two collaborated to create the definitive recording, with Jennings taking out part of his own vocals and replacing them with Nelson's.

  • On March 11, 1978, Jennings and Nelson's duet version of "Mammas Don't Let Your Babies Grow Up to Be Cowboys" reached No. 1 on the Hot Country Songs chart.
  • The song spent four consecutive weeks at the top of the chart.
  • In 1979, Jennings and Nelson's duet won the Grammy Award for Best Country Performance by a Duo or Group with Vocal.

The players

Waylon Jennings

An American country music singer, songwriter, and musician, considered one of the pioneers of the Outlaw country music movement.

Willie Nelson

An American country music singer, songwriter, musician, author, poet, actor, and activist, also considered a key figure in the Outlaw country music movement.

Ed Bruce

An American country music singer-songwriter who wrote and originally recorded "Mammas Don't Let Your Babies Grow Up to Be Cowboys" in 1976.

Patsy Bruce

Ed Bruce's wife, who co-wrote the song "Mammas Don't Let Your Babies Grow Up to Be Cowboys" with him.

Chris LeDoux

An American country music singer, songwriter, and rodeo champion who also recorded a version of "Mammas Don't Let Your Babies Grow Up to Be Cowboys" in 1976.

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The takeaway

Waylon Jennings and Willie Nelson's iconic duet version of "Mammas Don't Let Your Babies Grow Up to Be Cowboys" remains a beloved classic in the outlaw country canon, showcasing the pair's musical chemistry and the enduring appeal of their signature sound.