What would be a good thesis statement using the theme of suffering, in "Sonny's Blues," and the symbolism/imagery of light and darkness and the...

With suffering as the main theme of James Baldwin's
story, one way to examine this theme is through the development of Sonny's character
along with the narrator's that are often "trapped in the darkness which roared
outside."  For both men there are moments in which they have the blues and suffer in the
darkness of their lives, but music takes this suffering from
them. 

Music also helps the narrator to understand his
brother's suffering as, sitting in he darkness at the night club, the brother finally
really hears the music in the manner in which Sonny has heard the street singer.  In the
night club, the narrator hears evocations that pull the storm from his and
Sonny's souls.  As this "triumph" occurs, the narrator sees the scotch and milk that the
waitress brings to Sonny as "the very cup of trembling"--the symbol of the suffering and
trouble sonny has experienced--and the narrator understands there in "the indigo
light."