|Antonin Dvorak wrote the Serenade for Strings, Opus 22 in 1875. He was 34 at the time, he had been married for two years and had recently taken a job as the Organist at St. Adalbert's Church in Prague. For the first time in his life his employment provided him enough money & enough free time to focus on composing. It was a prolific period for Dvorak & the Serenade for Strings was one composition from the period.
What you can listen to here is The Serenade for Strings that has been transcribed for two pianos by Grant Groberg. The two pianos in the recording are arrayed left-right, flipped around so that the bass strings for each are in the center of the sound stage and the treble notes spread out to the right & left. Of course the performance is super over headphones.
Here are the five movements.