We would like to invite an entertainment group of a foreign country to come to United Stats with P-3 visa, with the help of your excellent P visa Do-It-Yourself package. We understand that the "culturally unique” is required for P-3 visa classification. How could we describe it in our P-3 visa application? and do we have to provide expert written testimony for the "culturally unique”? 

The “culturally unique” requirement has a significant role in the adjudication of P-3 visa applications for performing artists and entertainers. In many cases, musical groups and entertainers from foreign countries were denied a P-3 visa for failing to establish that their performance was “culturally unique” as required for the P-3 visa classification.

Generally, a “culturally unique” style of art or entertainment is not limited to traditional art forms, but may include artistic expression that is deemed to be a hybrid, or fusion of more than one culture or region. Due to the complex and novel issue in P-3 visa applications, the P visa regulatory definition of “culturally unique” requires USCIS adjudicators to make a case-by-case factual determination, and USCIS adjudicators will review the entire record of the musical groups or entertainers, which included expert written testimony, and corroborating evidence on behalf of the musical group or entertainers.