Welcome to the first part in our series on Bach’s Two Part Inventions. These are masterful works that are not very long but brilliantly conceived. If you’re looking for something short and challenging to practice these could be a great choice for you.
Let’s start by breaking down exactly what is meant by “two part invention”. This phrase simply means it is a type of 2-voice counterpoint (for more information on this subject please watch our video on What is Counterpoint?) To put this simply, there are two different lines of music and at no point are there more than two different notes playing at the same time in just about the whole piece. Even with these limitations this is an amazing composition that’s built with a subject and a countersubject. Being able to delineate these two phrases is what makes counterpoint so special.
A great way to separate the subject from the countersubject is to phrase them differently from one-another.
For example, in the first phrase you have this as your subject:
And this as your countersubject:
In this particular piece the subject and countersubject are incredibly similar. So how should you make each one stand out? Well you might notice that a few bars into the piece the countersubject has elongated eighth notes.
A great way to delineate these notes is to play them legato and in groups; with the last note being short. This is a great way to separate the countersubject from the subject.
The beauty of Bach is that there is really no right or wrong. A lot of his music is open for interpretation so if you wanted to play the phrasing completely differently it can work just as well. Why is this? Because Bach rarely wrote phrasing into his music. It is up to you come up with the phrasing.
Unlike later music that has melody and harmony and obvious distinctions between the two, these Bach Inventions have intertwining melodies instead. So for now have fun and experiment with these pieces. When we return we will have more videos for you on these inventions that show even more extreme examples of delineation between subject and countersubject.
Thanks so much for joining me here at Living Pianos. If you have any questions please feel free to contact us directly: info@livingpianos.com (949) 244-3729.