Music LISTEN: Unknown Mortal Orchestra – SB-06 H by Happy May 2, 2019 Music Unknown Mortal Orchestra Copied to clipboard H by Happy May 2, 2019 Copied to clipboard Music Unknown Mortal Orchestra As any fan of Unknown Mortal Orchestra will tell you, the ‘SB’ series is as essential to the band’s output as any of their studio albums. SB-06 has been available online since December, but officially comes to Spotify today. Listen in.