PIANO BOOK by LANG LANG has sold 1,827 copies in Korea.
PIANO BOOK certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Korea |
1,827 | RIAK / Gaon charts |
Korea Sales: 1,827
Certification / note: RIAK / Gaon charts
Certification Date / sales as of:
|
|
| Total sales | 1,827 | (in 1 country) |
Total
Sales: 1,827
(in 1 country)
|
Year-end chart performance for PIANO BOOK
| Chart 2019 | Rank | Sales |
| South Korean International Albums (Gaon) |
16 | 1,865 |