"A lullaby" [boomerang]

I'll sing perhaps a lullaby   come listen!
    you're welcome (if you'd like)   to play the drum
remember how in spring   the leaves would glisten?
    how summer grew redundant   with the sun?
and recollect how autumn   gave admission
    to beauty's balcony?   the play's not done!
    in truth   the second act has but begun!
I'll sing perhaps a lullaby   come listen!