Listening Gallery: Musical Form 1.7 2003/10/02 13:34:40 GMT-5 2007/01/11 10:54:04.649 US/Central Anthony Brandt abrandt@rice.edu Anthony Brandt abrandt@rice.edu Elizabeth Gregory elizabeth@cnx.org Please note that you must have the most recent copy of Macromedia's Flash plugin installed to play the musical examples. For each exercise, click when you hear a change of section. Then, use the pull-down menus to label each section. An A-form requires no input. After you have listened to the example, "click for solution" to check your analysis. This is an A-B-A form. The A-section is in the minor mode. It opens with a brief introduction, establishing the piano accompaniment's undulating rhythm; the voice then enters. The A-section concludes with a long stopping point--the first interruption of the steady rhythm. The B-section is in the contrasting Major mode. It introduces a new melody and accompanying rhythm. Just as the A-section, the B-section ends with a long stopping point. The A-section then returns, beginning immediately at the entrance of the voice. The original vocal line is reprised with minor changes. This is an A-form: The rhythm and texture remain constant throughout the composition. This is an A-form: As in the Chopin Prelude, the rhythm and texture remain constant throughout the composition. (In this case, the texture is the oscillation between two timpani notes.) The dynamic (loud/soft) is varied, but these fluctuations are too brief to create a strong contrast. There are two plausible ways of reading the form of this jazz composition. The first is an A-B-A: The A-section is the song's main material, presented by all three instruments as an ensemble. The B-section consists of improvisatory solos. Then the A-section returns in its entirety. A-B-C-D-A is another possible reading of the form. This reading takes into account that there are three improvisations: first, the piano solo; second, the trumpet solo, accompanied by the piano; third, the drum solo, periodically punctuated by the other two instruments. Throughout the solos, the rhythmic drive is steady. The link between solos are carefully blurred: The piano keeps playing when the trumpet enters; both trumpet and piano play repeatedly during the drum solo. As a result, a large A-B-A, in which the B-section is divided into three sub-sections, would be my preferred reading. The sections in this movement are strongly contrasting and well-differentiated from each other. The A-section is energetic and bold, with repeated upward scalar figures traded among the instruments. The B-section is lyrical and softer. The C-section is aggressive and turbulent, ratcheting up the tension to its highest peak. The A-section is played three times. The final time, it is extended to create a closing section or coda.