I recorded this a couple years ago, and somehow lost track of the audio. Here it is finally with my edited (and often re-edited) version of the score.
Obviously, I prefer a less metronomic approach to these studies (well, most everything, frankly) than some other musicians. I do practice with a metronome, obsessively with some passages and exercises, but to perform metronomically makes almost no sense to me a lot of the time. In this particular case, I would cite that cornet players historically were known for their use of rubato, probably to emulate violin and piano virtuosos.
To continue the trend I suppose, Yo-Yo Ma's recordings of the Bach Cello Suites are definitely a source of inspi...