Legal Analysis: Changing lyrics and singing songs on the Internet is considered as infringement. Where an existing work is adapted to produce a work, permission shall be obtained from the copyright owner of the adapted work and the copyright owner of the original work, and remuneration shall be paid.

Legal basis: Article 40 of the Copyright Law of People's Republic of China (PRC). Producers of audio and video recordings shall obtain permission from the copyright owner and pay remuneration for using other people's works to produce audio and video products. Producers of audio and video recordings shall obtain permission from the copyright owner and the copyright owner of the original work and pay remuneration for the adaptation, translation, annotation and arrangement of existing works. A producer of a sound recording may, without the permission of the copyright owner, use a musical work that has been legally recorded as a sound recording by others to make a sound recording, but shall pay remuneration in accordance with the provisions; If the copyright owner declares that it is not allowed to use it, it shall not be used.