This Sonata is from Johannes Brahms and is an author transcription for viola of the original for clarinet. http://www.classical.net/music/recs/reviews/m/mer84190a.php
Only 1, but that sonata is really long and difficult.
2- E major (Opus 38) and F Major (Opus 99).
Edward Applebaum has written: 'Piano sonata' -- subject(s): Sonatas (Piano) 'Montages' -- subject(s): Trios (Piano, clarinet, violoncello)
No, Louise Japha was a fellow-pupil of Eduard Marxsen, with whom Brahms studied with when he was young. She reported a piano sonata that Brahms had played or improvised at the age of 11, but destroyed in later life.
A Piano Sonata
Brahms's Sonata for Violin and Piano no 3 in D minor, Op. 108, was written between 1886 and 1888, during the Romantic Era. It was the last in a triptych of violin sonatas, and was first performed in Budapest in 1888. Dedicated to a friend and colleague of Brahms, Hans von Bulow, this sonata has four movements, which was a departure from Brahms's preceding sonatas, each of which had three movements. The movements were: 1. Allegro 2. Adagio 3. Un poco presto e con sentimento 4. Presto Agitato
Five pieces of music written for the clarinet include Time Pieces for Clarinet and Piano by Robert Muczynski, Clarinet Concerto in A by Mozart, 3 Clarinet Concerta but Cruseel, 3 Pieces for Clarinet Solo by Igor Stravinsky and Clarinet Concerto No., 1 by Carl Maria von Weber,.
He most likely wrote it as a gift to his teacher Jozef Elsner for whom it is dedicated.
It is a Sonata For Violin & Piano.
Mozart wrote 18 complete keyboard sonatas for the "piano" of his time (which was not, strictly speaking, the modern pianoforte). There is also a traditional "19th" sonata which consist of two separate works usually performed as a complete sonata. You can find all 19 of them, chronologically, in both MIDI and MP3 form at: http://www.sdrodrian.com/mozart/sonatas/
I heard that's a free mvt, without rules... but I'm not quite sure...