Projoy] Some sort of popular beat combo, m'lud? No - see irach's earlier question
Botherer] An orchestra? Good to see you here! No
irach - Does the group still exist? It's not a group
Rosie] A Big Band/Dance Band? No. Thanks for the explanation. Interestingly Putonghua Chinese (Mandarin as it's often known) does much the same.
Inkspot - Did the group form before 1990? See earlier answers

Inkspot] Title of a piece of music? No
irach - Alexander's Ragtime Band? No

Time for a summary? The answer is a group of people with something in common, mostly male. The 'something in common' has connection with rock music, and takes its name from a specific human, but it's not a group. Questions about this involving religion, sexual activities, and being dubious have all drawn giggles or sniggers from the audience. It's not a relationship by blood, or connected with the military (though there was a connection once - sorry, should have noted that earlier), or a charity organisation. It's sometimes done for money, and it may well involve drinking. There's no connection with a particular time of year, and only a jokey connection with journeys.
Writing all that out makes me think that it's glaringly obvious, but perhaps I shouldn't be cruel ;)

Rosie - Elvis impersonators? YES! So as Rosie was the question-setter before me, the baton is returned to sender.

(Irouléguy) - Actually it was the Lactulose I handed you and you are gracious enough not to hand it back, though I hope you haven't drunk it. I'm told it's rather persuasive.

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Right, this one is ABSTRACT, and absolutely nothing to do with steam locos.

Sorry Rosie if the question is a bit broad, but what I mean is something like magetism or a black hole.