One of my favorites is the bach d minor chaconne transcribed by brahms for the left hand alone. Because of the busoni transcription, nobody plays this one. Of course it's less maestoso than the busoni but a lot more bach-like i think. Full of those meditative and "religious" moments contrary to busonis. It's not too difficult (for me it was almost sightreadable, although i'm not great at this, because u just play one hand), but still really challenging. And if i would sit in a competition jury, i would love to hear that one.
Just print out the sheet music and try it. I'm sure you will love it.
Wow now i really want to play it myself.
See you around, i have to go find the music and get back to my piano NOW. No time to waste
