janea, Your post reminds me of my 60th birthday. DD2 held a party for me in her garden. She lives on the edge of an estate so most of the neighbours are at the back but that didn't deter the musicians in the family from belting out Beatles songs well into the early hours.
During the fourth rendition of 'Hey Jude' we noticed we had been joined by a young couple in their pyjamas - singing their heads off. They apologised for gatecrashing but said it was a case of 'If you can't beat 'em, join 'em.' 