This week’s Sandbox digital music marketing report should be lurking in your inbox from last night. Our lead feature this week looks at digital-only labels, which are dramatically cutting overheads by removing physical stock in favour of putting out more releases across more genres. But how are they approaching marketing? Our Tools page looks at Twitter’s new Audio Card, which is already being used by Foo Fighters and David Guetta. Our Behind the Campaign feature explores how Deezer Elite is building its profile in the US, while our Campaigns section includes work for iamamiwhoami, Rudimental, Noel Gallagher and Wu-Tang Clan.