In a cute video, Katharine McPhee and David Foster's son, 1, displays his musical abilities

In a cute video, Katharine McPhee and David Foster's son, 1, displays his musical abilities ...

Katharine McPhee, 38, posted an adorable video of her son, Rennie David Foster, 1, playing on a drum set. Both of his parents are gifted musicians when it comes to music.

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Katharine McPhee shows off her and David Fosters son Rennies' musical gifts https://t.co/VtqHzRgqwC #SM pic.twitter.com/YduOQHE0Kc

In the home video, Rennie wore a cute grey-colored T-shirt with only his diaper on, which she displayed on her coffee table with a bright greenery and books, as well as a glass tic tac toe game next to the toddler's drum set.

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I love our extended family. You have never slammed how different your life is now. Well you only complain that you cant stay up late watching television in bed, but who can blame you -thats your favorite thing. You have only made bringing Rennie into the world a joy for me. To many more adventures baby!

Sara Foster, 41, Erin Foster, 49, Allison Jones Foster, 52, and Jordan Foster, 35 are all full siblings, as they share the same mother, Rebecca Dyer. Amy's mother is B.J. Cook, whom David married from 1972 to 1981. Allison's mother is a mystery.

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