Descripción en Youtube:
Anatoly Konstantinovich Lyadov or Liadov (1855-1914):
Etude & Canzonetta opus 48
2. Canzonetta in B flat major
1. Etude in A major
Sviatoslav Richter (1915-1997), piano
Live recording, 1952
Sheet music:
http://petrucci.mus.auth.gr/imglnks/usimg/9/9f/IMSLP06763-Liadov_-_Op.48_-_Etude___Canzoneta.pdf