Bach's ninth variation, written as a canon at the third (a contrapuntal technique), became an exercise in soft thick chords with wrong-note contrapuntal inner voices.
An improved fit is obtained with periodic variations written as the sum of a secular acceleration and two sinusoids of the angles φ and 2φ.
"33 Variations" (written and directed by Moisés Kaufman, at the Eugene O'Neill) is a musicology lecture disguised as an intellectual detective story within an emotional melodrama.
Those who know Copland only from "Appalachian Spring" might be stunned by the modernist sound of his Piano Variations, written in 1930, the year he turned 30.
One of the biggest sets of variations written for the keyboard, the greatest test of keyboard virtuosity before Beethoven, it is also one of the most synthetic large-scale keyboard compositions.
These days Ms. Fonda is revisiting an earlier incarnation, Broadway actress, and next month she will star in "33 Variations," written and directed by Moisés Kaufman, almost 50 years (46 if you want to be fussy) after she last appeared on Broadway, in "Strange Interlude" with Geraldine Page.
It would include the premiere of a half-hour set of variations written for him by another jazz star, Brad Mehldau; a few jazz-tinged Ligeti études; another duet with Mr. Burton on Oscar Levant's "Blame It on My Youth"; several of Earl Wild's Gershwin transcriptions; and the original 1924 band version of Gershwin's "Rhapsody in Blue".
Using an instrument authentic to the period the works were composed in, Brautigam performs a selection of Chopin's last major compositions, alongside works by Mendelssohn, including his sparkling Rondo Capriccioso and a set of Variations written to raise funds for a statue of Beethoven in Bonn.
And my father's variation, "write about what you don't think you know how to say".
Attempts have been made to capture as much variation in writing as possible by considering a large number of writers in the data collection process.
