Just 1 step, for foreign choirs only:

Send a request email to pbchoir#choirchina.cn (replace # with @), indicating the name/version of the song you're applying for, the name of your choir and conductor, and please submitting a brief introduction and/or reference materials of the choir as well.

If everything is fine, a licensed PDF copy will be sent to you within 3 working days.

Ciao.