Video: Mother's song moves baby to tears Most children are comforted by the sound of their mother's voice, but this little girl appears to experience a range of complex emotions when she hears her mother sing. The baby's extraordinary reaction was captured on camera by the family and posted online, where it has captured viewers hearts. In the video, the baby's mother can be heard asking, "Do you want mummy to sing a song? Let me know how you feel about this song," before launching beautiful rendition of 1988 Rod Stewart classic, My Heart Can't Tell You No. Upon hearing the song, the 10-month-old smiles, then tears start to roll down her cheeks in apparent emotion at the music. "It's just a song," her mother says when she has finished, at which the baby appears comforted and smiles again.