An album you can only listen to upon watching it.
Or put another way: music that only exists and is activated when the projection starts (and maybe that’s why it never appears listed on artists’ official discographies). ODDSAC by Danny Pérez (the creator to whom we owe the visual album nomenclature, by the way) for Animal Collective was a record that could only be listened to in cinema rooms, without an equivalent in audio format. Something similar happens with Frank Ocean’s Endless: apart from being a contractual obligation with Def Jam, this is as good an album as Blonde. Sometimes it even sounds like Frank Ocean’s Flashdance (that’s what Henry J Darger says)! How cool is that? But also, how many reviews have you read of it, and how many of Blonde?