In this thesis, I have studied the composer Johannes Brahms. I have talked about the background and history of his Quintet in B minor for clarinet and string quartet and I have then analyzed the piece. The purpose of this thesis is to find lesser known but significant information about Brahms to help other clarinetists when they have to perform this important piece of clarinet repertoire. Moreover, my artistic questions are if one piece can change your perception or your way to play it after doing a deep analysis and if the interpretation is in a way stronger than before. I decided to analyze this piece due to my interest in Brahms and to learn more about the expressive qualities in his music. I wanted to know more about the composer and so I chose this Quintet, because it is a challenging piece to play and is often performed.  From the quintet, I concentrated specifically on the possibilities of performing it and I tried to search for a way to have a deeper understanding of Brahms to produce the most convincing artistic performance of the piece.  After I learnt more about the background of this piece it resulted in a stronger interpretation of his quintet.