Trolls World Tour is the sequel to 2016’s Trolls movie and works as a multi-genre jukebox musical. The general plot is that two of the lead characters, Poppy and Branch, discover that there are Trolls in six different countries – each one devoted to a particular genre of music – and they have to unify to counter the evil Queen Barb and her father King Thrash (they are defined by hard rock, FYI) who want to turn all the Trolls into rock zombies.

To launch Trolls World Tour, Universal Pictures partnered with Spotify to create a Trolls-themed Harmoniser that riffs on the “music tribes” theme of the film. There are five genres to play around with – techno, pop, rock, funk and country – and by using the slider beside each one you are delivered a tailored playlist.

It doesn’t matter how much you slide up on some genres and down on others, you’ll always get a track by (or featuring) Justin Timberlake. And that, if you hadn’t already seen this coming, is because he is a major presence throughout the original soundtrack for the film.

Still, you get pretty decent recommendations: alongside the inevitable burst of tracks from the OST, one attempt by Music Ally to create a playlist brought up ‘Disco Inferno’ by The Trammps, ‘Funky Jam’ by Primal Scream and ‘One More Time’ by Daft Punk.

The idea is presumably that users – well, kids mainly – will try this multiple times to see what different results they get, generating a multitude of playlists and also having chunks of the OST served up to them.

The film obviously cannot open in cinemas until lockdown in different countries ends, but it was made available for home streaming from 6th April as the emphasis shifted to digital marketing to do the heavy lifting for the film.