Mah Na Mah Na The Muppets 1969 Brits will remember this as the BN biscuit advert tune. All from memory. It was one of the first songs I learnt using b7ths. Mah na mah na Do do do do do Mah na mah na Do do do do do Mah na mah na Do do do do do Do do do, do do do Do do do do do do Do do do