Langston Hughes video on "The Weary Blues"

Langston Hughes video on "The Weary Blues" was enjoyable and soothing. His voice co-insides with the poem perfectly. It gave more feeling and passion about African American musicians and the connection that was made to the audience during the Harlem Renaissance. The Harlem Renaissance was a time when African Americans expressed their art and music and was recognized for it. The darkness, dim lighting, and soft tone in the video, as well as the silent instrumental music playing, made the era of the Blues come more to life and appreciate its mournful rhythm.

In this poem, line four says "Down on Lenox Avenue the other night", I did not quite understand it. It became more apparent to me when Hughes read it in the video. With the map given to us for class, Lenox Avenue is a main street that is located uptown in New York. What I didn't understand is why the speaker said "down". Is the speaker trying to focus more on the word down to connect with the blues feeling? Or was the speaker trying to emphasize on the class of African Americans at the time? Anyone care to share any insights?