Mesh
Very cool indeed!!
You just never know when they'll decide to jump in on the music scene.
I just play my acoustic around the house and have music in their ears regularly.....one day, inspiration will strike them. 
They've had each their geetar hanging in their rooms, since they were big enough to be able to hold it.
They both play some geetar (our oldest is quite good), piano and drums (our youngest is not bad, considering how little he's played), so music has always been available.
I have recorded a song with my oldest son some years back

They play more music at home than me these days.
Everything from hit list music, to the old classics