Tenors and Judith Collins

It's a curious thing that we have so many touring singing groups who consist of nothing but tenors.  Is there something special about the tenor voice that makes it prime?  The trend perhaps started with the Three Tenors (men who really could sing, and didn't just do classical-pop), but since then we've had a rash of tenors in various numberings: Eleven Tenors, Seven Irish Tenors, and so on.  Where are the Sixteen Sopranos, the Bunch of Basses and the Eight Altos?

Judith Collins is perpetually in the news these days, usually for the wrong reasons.  As Minister of Justice you hear her talking very little about actual justice, and a great deal about what Judith Collins thinks.  As per today, when she ranted on about the lack of consensus amongst the politicians regarding changes to MMP:
"I'm not actually a party leader. I am the Minister of Justice, and if they need me to organise the kumbaya sessions of party leaders to get together and work out what it is they agree on, then there's something very wrong.
"My job is to receive the information and see if we can get a bill together.
"If these parties want changes they should come and talk to each other. It's not my role for bloody sake.
"I'm not their nanny.
"I'm not in charge of these other parties, I'm not in charge of eight parties in Parliament, plus the independent Brendan Horan."

I'm not sure what a 'kumbaya session' is, nor am I familiar with the expression 'for bloody sake.'  And doesn't the second statement contradict the first?  She doesn't want to organise the parties, yet she says her job is to receive the information and get a bill together.  Well, how is she going to get that to happen unless she organises the parties?  Time for a new Minister of Justice, methinks, one who actually knows the meaning of the word.