Oboe is a wind instrument, and Green Sleeve is an ancient English folk tune. For picking up the oboe and playing the green sleeves, the difficulty will vary according to one's musical experience, skill level and the length of practice time.

Generally speaking, learning oboe and playing complicated music is a challenge for beginners. Playing oboe requires mastering correct blowing, fingering and timbre control skills, as well as being familiar with the rhythm and expression of music. "Green Sleeve" is considered to be a moderately difficult piece in musical instrument performance, which involves some technical requirements, such as range jumping, pitch control, music expression and so on.

But for experienced oboe players, "Green Sleeve" may be relatively easy. After mastering the basic techniques, they can better handle the technical requirements and artistic expression of songs.

Generally speaking, oboe is a highly technical instrument, and learning and playing any music requires patience, practice and artistic perception. For beginners, learning green sleeves requires a certain amount of time and energy, while for experienced performers, it can be used as a technical exercise and artistic display.