Which streaming music service's initial marketing strategy involved inviting only existing customers of a specific retail brand, creating an exclusive 'by invitation only' launch that drove massive growth?

The music industry has undergone massive transformation with the rise of streaming platforms. While creating unprecedented access to music libraries, these platforms have also dramatically altered revenue models for artists, labels, and retailers. This poll explores a critical turning point in the industry's retail strategy that changed how we consume music forever.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Spotify's partnership with Facebook in 2011, allowing only Facebook users to register for the first 3 months in the US
Apple Music's exclusive 3-month free trial offered only to existing iTunes customers
TIDAL's initial launch offering ownership shares only to artists who agreed to exclusive releases
Gmail-style invite system for Spotify's 2008 beta launch, where each user could invite 5 friends, creating a viral growth loop