<Tr> <Td_colspan="2"> <Table> <Tr> <Td> "Something to Brag About" (1977) Something to Brag About1977 </Td> <Td> "Mammas Don't Let Your Babies Grow Up to Be Cowboys" (1978) Mammas Don't Let Your Babies Grow Up to Be Cowboys1978 </Td> <Td> "If You Can Touch Her at All" (1978) If You Can Touch Her at All1978 </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> "Something to Brag About" (1977) Something to Brag About1977 </Td> <Td> "Mammas Don't Let Your Babies Grow Up to Be Cowboys" (1978) Mammas Don't Let Your Babies Grow Up to Be Cowboys1978 </Td> <Td> "If You Can Touch Her at All" (1978) If You Can Touch Her at All1978 </Td> </Tr> </Table> <Tr> <Td> "Something to Brag About" (1977) Something to Brag About1977 </Td> <Td> "Mammas Don't Let Your Babies Grow Up to Be Cowboys" (1978) Mammas Don't Let Your Babies Grow Up to Be Cowboys1978 </Td> <Td> "If You Can Touch Her at All" (1978) If You Can Touch Her at All1978 </Td> </Tr> <P> Waylon Jennings and Willie Nelson covered the song on their 1978 duet album Waylon & Willie . This rendition peaked at No. 1 in March 1978, spending four weeks atop the country music charts . It also reached 42 on the Billboard Hot 100, and won the 1979 Grammy Award for Best Country Performance by a Duo or Group with Vocal . Also in 1979, Nelson's version was featured in the film The Electric Horseman with Robert Redford and Jane Fonda . This version was covered by Alvin and the Chipmunks as "Mammas Don't Let Your Babies Grow Up to Be Chipmunks" for their 1981 album Urban Chipmunk . It is also featured in a 2015 TV commercial for the Volkswagen Passat . </P>

Who sings mamas dont let your babies grow up to be cowboys