Listen to Ozzy Osbourne: http://bit.ly/ozzyosbournespotify Subscribe to the official Ozzy Osbourne YouTube channel: http://bit.ly/OzzyYTSubscribe Ozzy performed "I Don't Know" live on TV in Rochester, NY in 1981. See the full performance and interview on the MEMOIRS OF A MADMAN double dvd set available now at http://bit.ly/OzzyDVD Follow Ozzy Osbourne: Facebook: https://www.facebook.com/ozzyosbourne Instagram: https://www.twitter.com/ozzyosbourne Twitter: https://www.twitter.com/ozzyosbourne Website: https://www.ozzy.com Spotify: http://bit.ly/ozzyosbournespotify YouTube: https://www.youtube.com/ozzyosbourne #OzzyOsbourne #IDontKnow #LiveVideo #Ozzy #Live