In the quiet rhythm of seasonal transition, Amazon has opened a brief window for new listeners to enter its streaming world without immediate cost — four months free for Prime members, three for others, through October 9. It is a familiar gesture in the digital age: the invitation to sample abundance before committing to its ongoing price. Those who accept will find 100 million songs, ad-free podcasts, and monthly audiobooks waiting, though the subscription will renew automatically when the gift period ends.