An introduction to the foundational elements of music theory, including pitch and pitch class, rhythm and meter, major and minor scales, keys, intervals, triads, seventh chords, simple two-voice counterpoint, and simple four-part writing. Ear-training and sight-singing work are coordinated with written and analytical work. Keyboard Harmony and Performance (A MUS 265 or 270) and/or Aural Skills (A MUS 263 or 264) should be taken concurrently.