When a song must be sung: short poem

[Achebe]

Thanks for reading and commenting, Dale and burrealist.
@dale - the hoof drops are to rhyme with rooftops. Thanks for your comments on the rest of the poem. Food for thought there.
@burrealist - I think both "will" and "shall" are grammatically acceptable there, the latter implyimg conscious deliberation perhaps. Thanks for your other comments.