Playing or singing multiple notes at once that sound good together.

• A. Chord
• B. Harmony
• C. Dissonance
• D. Beat

Answer: (B)

Harmony is the combination of different pitches sounded at the same time to create a pleasing relationship. When you sing or play several notes together and they fit well, you’re hearing harmony. A chord is a specific vertical stack of notes that forms part of harmony, but the scenario described emphasizes the general pleasant sound of simultaneous notes, which is harmony. Dissonance describes sounds that feel tense or unstable, which would not be described as “sound good together.” Beat is the regular pulse of the music, a rhythmic element, not about the simultaneous sonority of notes. For example, playing a C major triad (C–E–G) at once is harmony in action—the consonant, stable kind—whereas a harsh interval would be dissonance.