Disc 18 in “Igor Markevitch: The Philips Legacy” contains a mysterious work for piano and orchestra by Nikolai Tcherepnin: “Tàti-Tàti”: Paraphrases on a Childhood Theme by Borodin, Cui, Liadov, Rimsky-Korsakov and Liszt (tracks 7-13, 20 minutes total).
The pianist is six year-old Olga Rostropovich.
The origins of this work are not explained in the booklet.
Here is what I found on the internet:
“Tàti-Tàti” is better known in English as “Chopsticks”.
Alexander Borodin composed several short pieces for piano four-hands, based on “Chopsticks”, to play with his daughter (the second piano part only requires two fingers).
Following his lead, other Russian composers (but not Balakirev, Mussorgsky or Tchaikovsky) composed additional pieces, then they sent the whole thing to Franz Liszt who added a prelude of his own.
In 1879, it was published as “Paraphrases: 24 Variations and 16 Morceux on a Simple Theme”.
It has been recorded by Marco Rapetti and Daniella DeSantis for Brilliant Classics:
https://www.youtube.com/watch?v=OBZnWRsfwQ8&t=298s
Nikolai Tcherepnin (father of Alexander) orchestrated nine of the compositions (ironically, nothing by Borodin) - published 1937.
No.1: Variations (24) and Finale by Rimsky, Lyadov and Cui
No.1a: Liszt: Prelude
No.4: Lyadov: Valse
No.5: Rimsky: Berceuse
No.8: Rimsky: Fughetta on B-A-C-H
No.9: Rimsky: Tarantella
No.11: Cui: Valse
No.13: Rimsky: Carillon
https://www.youtube.com/watch?v=PkCsLiG2y9k
https://www.youtube.com/watch?v=Ptk1ZtGPLHw
https://www.youtube.com/watch?v=ADdf478zffY
https://www.youtube.com/watch?v=KVaqm9dkDfU
https://www.youtube.com/watch?v=ExW7Cl3QRV0
https://www.youtube.com/watch?v=a04u4CKYSZY & Fughetta (Arr. of Paraphrases, No.8 by Rimsky-Korsakov)
https://www.youtube.com/watch?v=lJjMv76vrlw