“Manifesting digital content in physical form seems to work pretty well as a go-to-market retail strategy. Now Spotify, which itself is an unlimited shelf of intangible music, is getting on to retailers’ shelves by imitating iTunes Store’s tangible gift cards. UK supermarket chain Morrisons has agreed to stock Spotify cards, which come in £10, £30 and £50 varieties and whose value can be redeemed against Spotify’s Premium and Unlimited or its song purchases.”