How many (major and minor) keys are there? Why? 18How many (major and minor) keys are there? Why? 18How many (major and minor) keys are there? Why? 18How many (major and minor) keys are there? Why? 18How many (major and minor) keys are there? Why? 18How many (major and minor) keys are there? Why? 18How many (major and minor) keys are there? Why? 18How many (major and minor) keys are there? Why? How many (major and minor) keys are there? Why? 18How many (major and minor) keys are there? Why? 18 votes 18 votes How many (major and minor) keys are there? Why?