Having a Go At...the Block of Fat

If there was another singer...
at the block of suette.
Could you say it was...
a chickadee duet?

If there were three more singers...
at the block of suette.
Could you say it was...
a chickadee quartet?

Let's keep adding more.
A quintet, a sextet, and a septet.
In fact...why stop there?
LET'S HAVE AN OCTET!

Of course, they had to have names...
these singers at the suette.
I could only think of four...
Chet, Bret, Babette, and Colette.

If I had to admit a regret,
about the birdies at the suette.
It's that they finally stopped their chirps...
and flew off into the sunset.

That made me upset.