Utilize the input text as a context reference, choose the right relationship between restrictions and music streaming from the options. Options: 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.

Amazon Music UK head Paul Firth said: "Choice is something we don’t see at play that much in the music streaming market, so if you are a music streaming customer you can either pay £120 a year, or you can be subject to interruptions from ads or other listening restrictions through one of the free services."

Answer: distribution_format