Which retail partnership is credited with helping Spotify rapidly expand its premium subscriber base by bundling music streaming with another popular service?

In the competitive world of music streaming, strategic retail partnerships have been game-changers for market penetration. Some collaborations between music platforms and other industries have revolutionized how consumers access music and created new revenue streams for artists. This trivia question focuses on one of the most significant music retail partnerships that transformed the streaming landscape and set a precedent for future collaborations.

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Spotify + T-Mobile (with T-Mobile offering free Spotify Premium with select wireless plans)
Spotify + Samsung (with Spotify preinstalled as the default music service on all Samsung devices)
Spotify + Starbucks (with Spotify powering in-store music and offering premium discounts to Starbucks Rewards members)
Spotify + Hulu (with a bundled subscription offering both services at a discounted rate)