STOCKHOLM - Björn Ulvaeus, one of the two Bs in ABBA, sat down with Speakeasy on a sunny summer day in central Stockholm at a hipster coffee shop. The joint is located just around the corner from the capital's buzzing club scene that has hatched several global music wonders in recent years, including Swedish House Mafia and Avicii.

Sweden has long played an outsized role in the global music industry, providing a host of songwriters, producers, technological innovations and successful performers.

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