J.S.Bach’s Invention 7 BWV 778 is in the key of E minor. In the opening section the phrases end on the first eighth note quaver beat of the bar. Playing the E minor scale in both its harmonic and melodic forms will provide excellent preparation for playing this invention. Bach’s inventiveness is usually demonstrated in formal templates familiar to him and those either playing or listening to his music. Both vocal and instrumental models are used. The music editor believes the best way of approaching the playing of this work is with an essentially legato touch with some variation in touch in place in the bars where the line is in eighth notes or quavers and ornaments are not being played. In all music beauty of sound combined with interpretative intention must be aim of the musician(s) involved. One of the most interesting aspects of this invention is the variety of performance approaches that are demonstrated particularly by keyboard players. Some articulate the notes with great consideration while others interpret the movement as if it is a vocal work with an approach suggesting a declamatory delivery. The long trills are a challenge but can be omitted on the piano which has a sustaining quality unlike the harpsichord for which the work was primarily intended and the main domestic keyboard instrument of Bach’s own time. When introduced they need to be played rhythmically and with an intention suggesting the keyboard player is in control. The PlentyMusic principle when it comes to adding ornaments to music scores is to follow and more or less and imitate current modern performance practice. Ornaments are applied consistently although there is scope for players to make some additions particularly at important cadence points in movements where the option of more notes in the trill can be explored. In the sheet music video score, which keyboard players may wish to refer to on the PlentyMusic YouTube channel ornaments have been written out as they sound in the realisation to represent exactly what is being played. The realisation plays back at 72 quarter note or crotchet beats to the minute. Players will perhaps need to edit their scores with reminders about accidentals within the bar. The Bach Inventions are generally intermediate level movements when played on a keyboard instrument. The principle behind J. S. Bach’s two part inventions is to take a musical idea or motive and then process it following the rules of good contrapuntal writing using the compositional processes of the baroque and at the same time referencing the closely related keys in the journey. Inversion, repetition, sequence, transposition, rhythmic augmentation/diminution amongst processes are evident in Bach’s inventions as most other music of the baroque period. J. S. Bach composed 15 Inventions in a collection dating from 1723 intended to introduce keyboard players to composition techniques of the baroque. They are excellent pieces for developing a sound and secure keyboard technique. A plain score is attached to the edited music score available as a pdf download from the PlentyMusic website. There is opportunity to distribute the weight between the hands to give prominence to the entries of thematic material. Pianists will find it rewarding to listen to performances of this invention on streaming platforms to get a sense of how important an aspect of piano playing this is.
