1. Generally speaking, the bug piano can only be used by one person, because if several people use it together at the same time, the account may be disordered. Generally speaking, you can only log in on the same mobile phone. If one mobile phone is not logged in, another mobile phone can log in.

2. Bug Piano is the world's leading piano music community. Focus on solving users' demand for piano scores in piano performance. At present, Bug Piano has 5 genuine authorized piano scores of all categories, multiple versions and multiple modes.