Orchestral manoeuvres in the dark

I've played second fiddle
most of the performance,
which you'd have noticed..
seated in the audience .
The second fiddle supports
the first..
and twiddles away their 
hearts content,
hoping it won't burst.

in the shade of the first..
the second is not less..
it's just another takes
the lime light with their
constant force..
neither are they best..

But still,
the second fiddle,
comes off worse
I should rehearse
changing tunes and
playing chorus and
verse....
putting 
Second fiddle first