Time of concentration

- With Ease
- Concentration with studying Jazz music # 1 · 2018年
- Studying
- Concentration with studying Jazz music # 1 · 2018年
- Test Period
- Concentration with studying Jazz music #4 · 2018年
- Highlighter
- Concentration with studying Jazz music #4 · 2018年
- English Word Notes
- Concentration with studying Jazz music #4 · 2018年
- Quiet Sky
- Concentration with studying Jazz music #4 · 2018年
- Dawn Study
- Concentration with studying Jazz music #4 · 2018年
- Reference Book
- Concentration with studying Jazz music #4 · 2018年
- Pencil On Notebook
- Concentration with studying Jazz music #4 · 2018年
- Dawn Air
- Concentration with studying Jazz music #3 · 2018年
- Rest In the Evening
- Concentration with studying Jazz music #3 · 2018年
- One-Minute Importance
- Concentration with studying Jazz music #3 · 2018年
- Calmly
- Concentration with studying Jazz music #2 · 2018年

翻译：