Idina Menzel, Demi Lovato and Disney are all being sued by musician Jaime Ciero, who is claiming that the massively popular song ‘Let It Go’ from Frozen sounds substantively similar to a song of his.

‘Let It Go’ was the memorable soundtrack to the runaway success of Disney’s 2013 animated movie Frozen, and a song that has subsequently driven millions of parents completely round the bend. It was performed by actress Idina Menzel for the movie itself, and by pop star Demi Lovato for the single version.

However, TMZ reports on Thursday (November 23rd) that musician Jaime Ciero is suing the three defendants, claiming that ‘Let It Go’ sounds overly similar to his 2008 song ‘Volar’.

Idina MenzelIdina Menzel is among the defendants

In a lawsuit filed this week, Chilean songwriter Ciero argues that the popular Frozen song sounds substantively similar to his own song, in terms of “note combinations, structures, hooks, melodies, lyrics, themes, production and textures.”

He goes on to describe his own song ‘Volar’ as “a huge international success reaching millions of listeners and landing on numerous charts of the most popular, top-performing songs.”

More: Idina Menzel says she’s inspired by Led Zeppelin

Well, ‘Volar’ only has 14,717 views on YouTube at the time of writing, a minuscule amount compared to ‘Let It Go’s 1.2 million.

According to the report, Ciero is therefore seeking a portion of the profits from both the song ‘Let It Go’ and from Frozen itself, which grossed more than £900 million worldwide. Neither Disney, Lovato nor Menzel have yet responded to the story.

It’s not the first time that Lovato has been at the centre of a copyright infringement dispute. In April this year, she settled a lawsuit with noise-pop duo Sleigh Bells who claimed that she had sampled their 2010 track ‘Infinity Guitars’ for her 2015 song ‘Stars’ without their permission. Terms of the settlement were not publicly disclosed.

More: Idina Menzel discovers an 11 year old superstar at Texas concert