From The Calls by Owen:
Stern bells annoy the rooks and doves at ten.
I watch the verger close the doors, and when
I hear the organ moan the first amen,
Sing my religion's---same as pigeons'.
Why isn't it then?
I'm not very sure what the meaning is with when.
"When I hear the organ moan the first amen, [I start to] sing my religion [is the same] as [the religion of the] pigeon"?
If it were then, the meaning would have been more clear: after the verger closes the door, the organ moans the amen that says "my religion is the same as that of the pigeon".