1. "Arietta" from piano Sonata no. 32 by L. v. Beethoven
    These Variations are so great, Thomas Mann spent a reasonably large amount of his book "Doktor Faustus" with it (although he makes a crucial mistake connected to the word "Wiesengrund")
  2. Ciaconna from the partita no. 2 for Violin Solo from J. S. Bach (BWV 1004)
  3. Diabelli-Variations by Beethoven
  4. Chaconne in F Minor by J. Pachelbel
    Simple, nice tune. It's hard to say what i like here, but i found myself listening to it over and over again over the years.
  5. Last Movement of the String Quarter no. 2 by D. Shostakovich
    Inventive Variations and a powerful finale.
  6. "Variations and Fugue on a Theme by Bach" by Max Reger
    Starts harmless, explores the range of tonality.
  7. 2nd Movement of the String Quartet no. 12 by L.v. Beethoven
    It's a sad variation.
  8. "Vingt Regards sur l'Enfant Jesus" by Olivier Messiaen
    Not a Variational cycle in the traditional sense... instead, he uses a number of leitmotifs.
  9. "The People United Will Never Be Defeated!" by Frederic Rzewski