The song heavily samples Martin Luther King Jr.'s historical "I Have a Dream" speech, which relates to the song's lyrics about racism. The single release of "A Dream" includes two will.i.am tracks, "Colors" and "Bus Ride."
The composition extensively references Martin Luther King Jr.'s "I Have a Dream" speech, aligning with the song's focus on racial topics. The single release of "A Dream" includes two tracks by will.i.am: "Colors" and "Bus Ride."