During the past weeks I've been studying BWV anhang 122, the march in D major. Sheet music can be found here. I'm more or less able to perform the piece, though not yet at the tempo indicated by the publisher, "suggested M.M.: minim = c. 72". I looked up a recording on YouTube, but was surprised by the enormous difference between how I perform the piece and how it is performed in the recording. YouTube link I'm referring to can be found here.
My question is: Was I supposed to know this is how the piece is supposed to sound? There are no hints in my book, besides the point there need to be 2 distinct accents in every bar. Or is the recorded musician adding a lot (too much?) of (personal) interpretation to make the piece sound like this? Is it typical of Bach pieces or pieces of that time?
I play organ, so there is bound to be difference compared to a harpsichord, but my performance is far less "dancy" and much more "as written in the sheet music".
N.B. I'm not referring to the few additional trills in the performance.
Edit: I now realize I put hardly any emotion in the music, no real accents on any of the beats. The linked performance is doing this in abundance. I realized I wasn't making music, I was pretty much executing the notes as written and not performing the piece in an attempt to recreate the intention of the composer. Since there is no way to accent individual notes in volume on an organ, a logical way to introduce accents is by varying the length of notes.