My hobby is listening to classical music.
This hobby has been going on since I was in elementary school.
I've listened to the music of so many composers so far.
For example, Beethoven, Bach, Mozart, Brahms, Tchaikovsky, Mahler, Wagner, Shostakovic, and Verdi,　Bruckner etc.
Of course, I didn't listen to it all the time.
But music has always been with me in my life.
I still listen to intermittently, but I made new discoveries.
That is Bruckner's Symphony No.8 is a very good BGM for self-study of English.
I think it's especially good for grammar learning and reading.
This is because Bruckner's Symphonies have a long playing time.
For example, Symphony No.8 takes about 1 hour and 20 minutes.
If you finish playing this symphony from the beginning you will have studied for 1 hour and 20 minutes.
In addition, Bruckner's symphony is characterized by many repetitions of melody and rhythm, so if you lose your motivation, you will feel excited and healed by the sound of the harp.
To put it simply, Both motivating and calming are possible with this symphonies. This is my personal opinion.
Please try it!
I highly recommend it!