Complex Numbers » difficult + musical pieces

http://en.wikipedia.org/wiki/Complex_number

http://www.clarku.edu/~djoyce/complex/

http://mathworld.wolfram.com/ComplexNumber.html

By most any standards the following are among the most difficult to play of all piano pieces. They require huge finger spans, tricky fingering, and unmatched finger speed.

Piano Concerto No. 3 in D minor, Op. 30 (a.k.a. Rach 3) by Sergei Rachmaninoff

http://en.wikipedia.org/wiki/Piano_Concerto_No._3_(Rachmaninoff)

Piano Concerto No. 2 in G minor, Op 16 by Sergei Prokofiev

http://en.wikipedia.org/wiki/Piano_Concerto_No._2_%28Prokofiev%29

Transcendental Etudes, No. 5 in B-flat, "Feux follets" by Franz Liszt

http://en.wikipedia.org/wiki/Transcendental_Etudes

Études, No. 1 in C major, Op 10 by Frédéric Chopin

http://en.wikipedia.org/wiki/%C3%89tudes_%28Chopin%29

For a sure smile read the lyrics and then listen to “Franz Liszt The Famous Pianist” set to the tune of Liszt’s Hungarian Rhapsody No. 2. All the songs available on the Beethoven's Wig CDs are great! A real hoot!