FRI. BRIEF: Deezer Radio App • Cassette Sales Grow • Spotify Stock Rally • Dolby 234 • More Posted byBruce Houghton January 18, 2019January 18, 2019 Leave a comment on FRI. BRIEF: Deezer Radio App • Cassette Sales Grow • Spotify Stock Rally • Dolby 234 • More FRIDAY 1.18.19 Music Business News From Around The Web Updated continuously under the More News tab