What is the relationship between music industry and music in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

If you remember during the IPO period, we also -- always mentioned that in the past, the Chinese music industry actually is a perfect music experience because everything is for free.

Answer: product_or_material_produced