Grindmother, the Canadian grindcore band who's namesake vocalist is a 68 year-old great grandmother, have uploaded a rehearsal video of their song "Mother Nature". This video is at the end of the article.
Comprised of her son Rainforest and other members of Corrupt Leaders, Grindmother released their debut album "Age of Destruction" to critical acclaim in 2016. Their videos have over 4 million views and have been shared by Ozzy Osbourne, Sepultura, Eric Andre, Hellyeah, Nick Mason and more. The band recently joined the Continental Concerts USA roster and are preparing to begin playing live dates soon.