I don't even understand how there could be such a thing as a 70 person rotation. If there were a 70 person rotation, the following facts would probably be true as well:
1) There were 70 singers waiting to sign up before you started karaoke or soon after you started? If not, how can you justify putting in a singer in hour 4 ahead of the first guy tht sang?
2) If there were 70 singers, I would assume there were 200+ people in the crowd? Most singers have at least a few friends that are non-singers.
3) The 70 person rotation either did not get finished, with all 70 different people singing, or it was more like a 100 person rotation and like 30 people left. I have a pretty busy karaoke bar, and have been to plenty busier than mine, and MOST singers will not wait over an hour, hour 1/2 to sing.
Do you mean that you had 70 total people sing in a 4 hour show?
I want more details!!
....you know I'm just giving you a hard time...really though, I don't see how a 70 person rotation is physically possible.