Please see this English text In the the last two decades,corporate america have placed a number of entrepreneurs in the limelight who have marched to the tune of a different drummer. I don't get the wording 'to the tune of a different drummer' here . I don't get analogy here . Is not drummer beats with hammers to correct tuning of drums . but how does that relate here? I don't get the overall meaning. any english native speaker or someone knows better english could you please explain this ?