The 75-year-old Beatles star, who tied the knot with Nancy, 57, in 2011, says his wife is a music fan, reported Femalefirst.
"She's a party girl. She's a music fan. She actually came to see me a while ago, when I was playing quite Madison Square Garden," McCartney says.
Father-of-five the musician has been married three times. His first wife Linda died after a breast cancer battle in 1998, while his marriage to Heather Mills ended acrimoniously in 2008.
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