Hey! I’ve been playing those songs from the Arbans Book 8va since I was a child; somewhere I had heard that Bill Chase did that. I try to play them being very aware of tone, style, interpretation, etc. I love the intermediate song books! I play selections from them at marked tempos to work on tone, counting, breath control, style, etc. I also play them in multiple keys; up a whole step, and then different intervals: third, minor third, fifth, etc. I am not sure why, but this does wonders for my sight reading ability. I never would have guessed that doing this level of transposition would help my sight reading, and I am still not completely convinced that it has – BUT! – ever since I started doing that, my sight reading ability has increased a whole bunch!