Courteney Cox's daughter is showing off her pipes! The 56-year-old actress took to Instagram on Sunday to share a clip of her 16-year-old, Coco Arquette, impressively singing Fleetwood Mac's 1977 track «Silver Springs.»In the clip, the teen sits in a chair with a mic, while her mom accompanies her on piano and Joel Taylor plays guitar.Arquette expertly belts out the emotional lyrics in the video, with her mom nodding along as she plays piano.«Proud of my coconut,» Cox sweetly captioned the