Abstract: An optical stack for sensing a presence of an analyte is provided. The optical stack includes a sensor material. The sensor material includes a first optical response including a first optical property having a second value in response to an excitation signal including the first optical property having a first value different from the second value. The first optical response includes a second optical property sensitive to the presence of the analyte. The optical stack includes a first optical film disposed proximate the sensor material and includes a third optical property having respective third and fourth values in response to the respective first and second values of the first optical property. The third value is different from the fourth value by at least a factor of 2.

Abstract: A method of and computer system for training a student to play a musical work having an identifiable rhythm structure, the musical work being decomposable into a plurality of variations each maintaining the identifiable rhythm structure. According to the method, a musical score of each variation is generated and then the musical scores are arranged in order of rhythmic difficulty. An animated movie is then generated, the movie comprising the music score of at least one variation, a sound recording of the music score, a graphic device that highlights the identifiable rhythm structure and a representation of how the music score would be played on a musical instrument. The animated movie is then presented to the student.

Abstract: A multimedia product for use for use in a multimedia computer to assist a student to learn to play a given musical work previously recorded on a master recording. A method of making the product is described which ensures that multimedia representations of the work are properly synchronized to the actual tempo variations, if any, in the master recording. A method of using the product for music training is also described.

Abstract: A method of and computer system for training a student to play a musical work having an identifiable rhythm structure, the musical work being decomposable into a plurality of variations each maintaining the identifiable rhythm structure. According to the method, a musical score of each variation is generated and then the musical scores are arranged in order of rhythmic difficulty. An animated movie is then generated, the movie comprising the music score of at least one variation, a sound recording of the music score, a graphic device that highlights the identifiable rhythm structure and a representation of how the music score would be played on a musical instrument. The animated movie is then presented to the student.