For over 100 years, Clementi's Six Sonatas, Op. 4 were published under the erroneous title, Sonatinas, Opp. 37 and 38. However, when Clementi first published these two-movement works, he called them Six Sonatas for Pianoforte or Harpsichord, Op. 4. These sonatas are excellent follow-up material to the Six Sonatinas, Op. 36, and provide intermediate students with an excellent introduction to the early Classical style. Interpretive suggestions are included.