I came across this today and had to share it.  There is nothing not cool about this Grandma from what I can tell.  This video was shot when she just showed up one day at a drum store and started playing.

When the "Grandma Drummer" showed up no one knew who she was.  She just sat down and started wailing away on the skins.  As soon as she was done, she was gone.  No one got her name and they knew nothing about her. Well, the drum store posted this video and asked if anyone knew her to please come back.

Someone knew who she was and she did return.

Mary is her name but I think she will always be known know as the 'Grandma Drummer' at this point. They are even booking shows and appearances for her. There is another video of her playing a kit with a double bass (can't find it now) which she had never done before and tore it up as well. Rumor has it that the drum shop is going to give her a really nice surprise!  I'll take bets Granny is getting a new kit!

Rock on Granny...rock on!