Context: "Your Mama Do n't Dance" is a hit 1972 song by the rock duo Loggins and Messina. Released on their self-titled album Loggins and Messina, it reached number four on the Billboard pop chart and number 19 on the Billboard Easy Listening Chart as a single in early 1973.\n\nQuestion: who sang your mama don't dance and your daddy don't rock and roll?
Step-by-step reasoning process below:
Loggins and Messina
The relevant sentence in the passage is: "Your Mama Do n't Dance" is a hit 1972 song by the rock duo Loggins and Messina.

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So, the answer is Loggins and Messina