Originally Posted by MahlerBrass

You'll definitely need the Timofei Dokshitzer recording if you don't already have it, and the Sergei Nakariakov recording isn't a bad idea either. I've never heard this piece approached too far off what Dokshitzer did, it was after written for him. The piece is very Russian in style so lots of vibrato and milk the lyrical section as much as you can, I'd study the recordings a lot, as hard as a technical piece as it is, it's even harder on a more intellectual level, best of luck!