Hughes's prefatory note compares the sequence's changes and interruptions with jazz performance. The poems make readers adjust to new speakers and situations, sometimes within a few lines. Recurring sounds and questions connect scenes that remain separate.
Dream Boogie opens by asking a listener to hear more than a cheerful rhythm. Later musical poems return to the same problem. A performance can sound lively while suggesting pain or exclusion.
The sequence also gives attention to particular lives. A student writes back to an English instructor, while mourners pay for a young man's funeral. These encounters make education, unequal freedom, money, and affection part of the book's account of Harlem.
Near the end, Harlem asks what becomes of a postponed dream. Its images suggest decay, weight, and possible eruption. The question acquires greater scope when read beside the other speakers and circumstances in the sequence.