Title: Piano Sonata No. 1 (Enescu)
Content:  The Sonata No. 1 for Piano in F-sharp minor, Op. 24, No. 1, is a piano sonata by the Romanian composer George Enescu, completed in 1924.
Title: Piano Sonata No. 1 (Rachmaninoff)
Content:  Piano Sonata No. 1 in D minor, Op. 28, is a piano sonata by Sergei Rachmaninoff, completed in 1908. It is the first of three "Dresden pieces", along with Symphony No. 2 and part of an opera, which were composed in the quiet city of Dresden, Germany. It was originally inspired by Goethe's tragic play Faust; although Rachmaninoff abandoned the idea soon after beginning composition, traces of this influence can still be found. After numerous revisions and substantial cuts made at the advice of his colleagues, he completed it on April 11, 1908. Konstantin Igumnov gave the premiere in Moscow on October 17, 1908. It received 
Title: Piano Sonata No. 1 (Chopin)
Content:  The Piano Sonata No. 1 in C minor, Op. 4 was written by Frédéric Chopin in 1828 (probably begun around July). It was written during Chopin's time as a student with Józef Elsner, to whom the sonata is dedicated. Despite having a low opus number, the sonata was not published until 1851 by Tobias Haslinger in Vienna, two years after Chopin's death. This sonata is considered to be less refined than the later 2 sonatas, and is thus much less frequently performed and recorded.
Title: Piano Sonata No. 1 (Scriabin)
Content:  The Piano Sonata No. 1 in F minor, Op. 6, by Alexander Scriabin, was the third of twelve piano sonatas that he composed. It was completed in 1892. The music is emotionally charged as much of the music was written after Scriabin had damaged his right hand through excessive piano playing.
Title: Piano Sonata (Bernstein)
Content:  The Piano Sonata, originally entitled Sonata for the Piano, is the only piano sonata by American composer Leonard Bernstein. An early work by the composer, it was finished in 1938.
Title: Piano Sonata No. 1 (Beethoven)
Content:  Beethoven's Piano Sonata No. 1 in F minor, Op. 2, No. 1, was written in 1795 and dedicated to Joseph Haydn. Sir Donald Francis Tovey wrote, "Sir Hubert Parry has aptly compared the opening of [this sonata] with that of the finale of Mozart's G minor symphony to show how much closer Beethoven's texture is. The slow movement ... well illustrates the rare cases in which Beethoven imitates Mozart to the detriment of his own proper richness of tone and thought, while the finale in its central episode brings a misapplied and somewhat diffuse structure in Mozart's style into a direct conflict with themes as Beethovenish in their terseness as in their sombre passion".
Title: Boris Lyatoshinsky
Content:  and 1926. The Piano Sonata No.1 was his first printed work, published in Moscow, in 1926. This work was unusual for its time. It displays the fine skill of a piano player and a composer, who is not afraid of experimenting. Thus, Lyatoshynsky changes the structure of the traditional Sonata piece, creating only one movement and uses challenging rhythmic combinations. The Sonata No2 (1925), dedicated to Miaskovsky, displays the composer's technique which includes the use of the romantic shapes and a strongly defined thematicism. Some of the melodic ideas presented by the composer are supported by a growling accompaniment, the two often functioning 
Title: Piano Sonata No. 1 (Schumann)
Content:   The Piano Sonata No. 1 in F minor, Op. 11, was composed by Robert Schumann from 1833 to 1835. He published it anonymously as "Pianoforte Sonata, dedicated to Clara by Florestan and Eusebius". Eric Frederick Jensen describes the sonata as 'the most unconventional and the most intriguing' of Schumann's piano sonatas due to its unusual structure. The Aria is based on his earlier Lied setting, "An Anna" or "Nicht im Thale". The four movements are as follows: 1. Un poco adagio - Allegro vivace (F minor) 2. Aria: Senza passione, ma espressivo (A major) 3. Scherzo: Allegrissimo (F minor) – Intermezzo: Lento. Alla burla, ma pomposo (D major) – Tempo I 4. Finale: Allegro un poco maestoso (F minor, ending in the tonic major)
Title: Piano Sonata No. 1 (Enescu)
Content:  an interview given shortly after completing the score, Enescu admitted, "It may seem bizarre that I should interrupt work on my opera Œdipe in order to write a piano sonata. The artist has moments when he is forced to follow his heart's impulse, so I did not find it a contradiction. The Sonata is dedicated to the Swiss maestro Frey, to whom I had promised it 18 years ago. It was time I wrote it!" The first performance was given in November 1925 by the composer himself, in a concert that was part of a festival dedicated to his chamber-music works, organized by the Society of Romanian Composers at the Mic Theatre in Bucharest. He also performed the work in Paris for the first time in April 1926, as part of a concert given by the Société Nationale de Musique.
Title: Piano Sonata No. 1 (Mozart)
Content:  Wolfgang Amadeus Mozart's Piano Sonata No. 1 in C major, K. 279 / 189d (1774), is a piano sonata in three movements. It was written down, except for the first part of the opening movement, during the visit Mozart paid to Munich for the production of La finta giardiniera from late 1774 to the beginning of the following March. A typical performance of the sonata takes about 14 minutes. It is the first of his 18 piano sonatas. All but two of the sonatas, No. 8 in A minor and No. 14 in C minor, are in a major key. Also, the first six sonatas seem to follow the cycle of fifths, to the flat side first (No. 1 in C major, No. 2 in F major, No. 3 in B-flat major, No. 4 in E-flat major) and then to the sharp side (No. 5 in G major, No. 6 in D major).

Question: Who was the composer of Piano Sonata No. 1?
Answer: Sergei Rachmaninoff.
Sergei Vasilievich Rachmaninoff.
Rachmaninoff.
Rach.
Sergei Vasilyevich Rachmaninoff.