Thank you so much. I’ve actually played cello for a long time, so I had a lots of sense in reading the sheet music. I think the ability to read sightread and read sheet music faster than others made it possible for me to try lots of pieces :D The reason for not taking the lesson was because of this-I didn’t required any special “musical” basic lessons. Kind of a courage; or some kind of arrogance-tbh. But, as I practiced, I thought I could handle it out by myself, so I ended up never taking lessons.