Taylor Swift

A mother cried upon hearing Taylor Swift's had written a song in tribute to her late son.

Maya Thompson lost son Ronan to cancer last year and shared her experiences online, which Taylor, 22, was so moved by she wrote a touching track in tribute to the three-year-old.

Taylor debuted the song, simply titled 'Ronan', by performing it live during the 'Stand Up 2 Cancer' telethon on Friday night in Los Angeles.

Maya, 33, from Arizona, has written about the experience, saying she was unaware her story had effected Taylor so much, until she received a surprise voice mail from the singer.

She wrote on her blog: ''My calmness soon turned to complete and utter frozen shock when these words came out of her mouth. 'I wrote a song for Ronan,' she said.

''The tears started pouring down my cheeks as soon as I heard her say those words. But her words didn't stop there. Not only did she write a song for you, but she wanted to know if it would be alright to perform it on the nationally televised 'Stand Up 2 Cancer' show.''

Maya continued to say that she was a ''blubbering mess'', and described Taylor as looking like an ''angel'' when she performed.

© Bang Showbiz