I have an college orchestra audition on Tuesday that was actually sprung on me a little bit, so I've been frantically preparing for it, and I have a question that could save me a lot of time and stress. I need to play either an etude or solo for the audition in addition to excerpts from the pieces that we would be playing. I thought I only had the option to play an etude, so I rush ordered the Kreutzer and Storch-Hrabe books. I looked on the audition sheet and apparently a etude OR solo will suffice. I've been working on the 4th movement of Eccles and can by that time have it at a fairly impressive speed and still be able to play it well. Would the 4th movement of Eccles be considered around the same level as the etudes from those books? Should I get an etude together or would this last movement of Eccles work?