When using the music and soundscapes I composed for him, the client came back with the comment that "never before" had the players felt so immersed, invested, and engaged in the roleplay, and the game itself! It usually takes quite a while before the players warm up to the roleplay aspect of their characters, or to get properly invested in the story and gameplay. With the ambience fueling the scenes and emotions of the players, this was mere minutes before everyone was completely in-character and invested in the session.