Question: It was this day in Rock History in 2017, these guys, largely credited with inventing heavy metal music, played their last concert. Who was it?

Answer: It was Black Sabbath! The two-hour gig at the NEC Arena in their home city of Birmingham saw the rock veterans play 15 songs ending with their first hit, ‘Paranoid’. Ticker tape and balloons fell as singer Ozzy Osbourne, 68, thanked fans for nearly five decades of support.