Mammas Don’t Let Your Babies Grow Up To Be Cowboys by Waylon Jennings & Willie Nelson is in G at 150 beats per minute and runs 2:52 across 54 bars. It uses 4 chords — D7, G, G7, C. The chord diagram changes as the song plays and the words light up as they are sung, so you can strum and sing along without reading ahead.
Want the melody line note by note? Mammas Don’t Let Your Babies Grow Up To Be Cowboys guitar melody tab.