During an interview on SiriusXM's My Favorite Song with John Benjamin Hickey, Neeson recalled how Richardson took secret singing lessons so she could sing their wedding song, Van Morrison's "Crazy Love," to him during their nuptials in 1994.
"Behind my back Natasha had been taking singing lessons to sing it to me," Neeson said. "After the ceremony we were all going out to start the night's festivities and she grabbed the microphone and she sang me this. ... I was like, Wow!"
Richardson, 45, suffered a head injury while skiing in Canada in March 2009. Based on a pact the two had made, Neeson opted to remove her from life support after X-rays indicated she was brain dead.
Listen to Neeson's My Favorite Song interview here: