The mere mention of classical music makes me think of strings and wind instruments such as violins and flutes but never a drum. Maybe I don’t have a good ear for music so I didn’t notice the drums. One time I had seen a documentary on tv about an orchestra that was recording classical music. There were 2 drummers who were using the brush drumstick, pardon me if the term is not accurate. Instead of a drumstick, they were using a stick with a brush. I just didn’t hear exactly what sound the drums make that’s why I’m also curious about it.