After premiering the track at Governors Ball over the summer, Grimes has just released a demo version of 'Go.'

After Rihanna's people reportedly rejected the track that the Canadian artist penned, Grimes decided to keep it for herself and do some more work on it with producer Blood Diamonds.

"James just sent me this weird demo of 'Go,' considering the wackiness of the breakdown I assume this is the [original] demo [because] we were extremely caffeinated that day," she wrote on Tumblr. "In any case I dunno if it's particularly different from the 'final version' but I'm always interested in hearing demo versions of things."

She added, "I think we mighta mixed a bit of the soul out of it in retrospect. I appreciate the absurdity of Mike’s 2nd drop, the thicker snares in the intro etc. It's a bit more crowded ... Also these are demo vocals for songwriting purposes only and they suck a lot so don't mind them."

Knowing that it is a leak, Grimes doesn't seem to have an issue with it. "** also have no idea how this leaked but it doesn’t seem to hurt anything that it exists," she wrote.

In September, Grimes reveled that she was in the studio working on the follow up to her 2012 LP, 'Visions' because she scrapped the material she initially intended for the new album.