The influence that the virtuoso violinist Niccolò Paganini exerted on composers and performers of the early 19th century cannot be overestimated. Never had any performer demonstrate the total mastery of an instrument as Paganini did on the violin. He also had a level of showmanship that helped make him world famous.
Franz Liszt was already an accomplished concert pianist when he first heard Paganini in Paris in 1832, and was determined to do for the piano what Paganini did for the violin. He began to practice the piano even more strenuously until he had become the most acclaimed pianist of his time.
It was natural that Liszt would use the music written by the man who inspired him in some way, and the result was the first version of the six Grandes Études de Paganini of 1838, which contained technical difficulties that were impossible for anyone else to play but Liszt, Eventually in 1851 he revised them and made them less technically demanding, but to this day the revised version contains some of the most technically demanding pieces in the piano repertoire.
I. Étude No. 1 In G Minor (Tremolo) - Among the first published works of Paganini's opus 1 were the famous 24 Caprices For Solo Violin. These works revolutionized violin technique. Paganini opened up possibilities for the violin that were unheard of before his time, and Liszt used some of these works as inspiration for his etudes. The first one in G minor begins with a introduction taken from the 5th Caprice of Paganini and begins with arpeggios. The main body of the etude is taken from the 6th Caprice and consists of a theme placed against tremolos. The piece ends with another arpeggiated reference to the 5th Caprice.
II. Étude No. 2 In E-flat Major - Taken from the 17th Caprice of Paganini, The theme of this etude is a rather simple one, but the accompaniment and manner of its presentation bristles with scales, arpeggios and all manner of keyboard acrobatics as does the original version for violin.
III. Étude No. 3 In G-sharp Minor (La Campanella) - This etude is taken from the finale of Paganini's Violin Concerto No. 2 In B Minor. The nickname translates to 'Little Bell', and Liszt gives the impression of a little bell by playing in the piano's high register. It is the most popular of the set.
IV. Étude No. 4 In E Major (Arpeggio) - Taken from the 1st Caprice of Paganini, this etude is written all in the treble clef on one line in imitation of solo violin music. The lowest note in the piece is the first G below middle C, which is the lowest note on the violin.
V. Étude No. 5 In E Major (La Chasse) - From the 9th Caprice of Paganini, this etude has the horn calls and excitement of the translation of its subtitle, The Hunt,
VI. Étude No. 6 In A Minor - From what could possibly be the most well known piece of music written by Paganini, the 24th Caprice, a set of variations on an original theme. Liszt was the first among many composers that used this theme for a set of variations. Liszt's version is a kind of translation of the original to pianistic terms, but isn't as inspired as Paganini's original. But Liszt wrote this set of etudes on the music of Paganini to push the boundaries of piano technique and to dazzle audiences, and they have accomplished both.