Elevator Music

[Mwaba don]

The doors kissed to mark the start (Your first line set up a Romantic hook, I think it is very nice.) ( the image set by the doors kissing is intimate.)
of another trip to the ground floor.
Soft jazz battles with the burlap silence (The image made here of the type music and sense of what is happening is very interesting and enjoyably to read.)
of a man and woman alone together.
Thoughts stay home to hum, tap, and sigh
at the sight of another missed opportunity. (your poem lines setting up what was happening with you at the moment and In your mind made this a good poem to read.)

Your poem set up what was happening with you in the moment and in your mind was amazing.
I think the short length of the poem fit well into the meaning of the poem.
May be you might consider putting some spacing after two lines of the poem?