Leona Lewis and her record label – Simon Cowell's Syco – will next week have to fight off a high court challenge from a 22-year-old, up-and-coming Swedish DJ if the former X Factor winner is to be able to release her forthcoming single, Collide.

On Monday, the high court is scheduled to hear a plea for an injunction from dance music producer Avicii, who alleges that the instrumental from Collide is a copy of that in his own song Fade Into Darkness – an allegation denied by the chart-topping Lewis and her team.

If the injunction request is upheld, it will prevent the planned release of Collide on 4 September, which is intended to be the lead song for the third album from the singer from Hackney, who is aiming to show that she is more than a singer of Bleeding Love-style ballads.

Producer and DJ Avicii – whose real name is Tim Bergling – recorded a dance-pop song in October last year and was signed up by the Ministry of Sound label early this year. The song, however, had no vocal track and Ministry sent out the musical arrangement to various singers in the hope they would complete the song.

During the spring, the DJ's team received a vocal track – called Collide – which they rejected in favour of another singer's efforts, producing a song called Fade Into Darkness. It was planned to release Fade Into Darkness in October, with a heavy marketing push in the hope the song would be a hit.

However, Collide ended up being heard by executives at Syco, Cowell's record label, and the song was chosen for Leona Lewis to sing. At this point, according to Bergling's manager Arash Pournouri, he was contacted by a music executive who said the track had been pitched as a potential single for Lewis. Pournouri said he would not consent to the use of his music because he was already committeed to releasing Fade Into Darkness.

Collide was then first played on BBC Radio 1's Scott Mills' show on 15 July, and was shortly after made available on YouTube. Pournouri alleges that Leona Lewis's Collide "is a straight re-recording" of the earlier version of the song of the same name with the instrumental from Avicii.

A spokesman for the Ministry of Sound said: "Avicii is an up-and-coming talent; we think he should be given a fair crack at making this record the hit it deserves to be." A spokesman for Sony Music – which owns half of Syco while Cowell owns the balance – said neither it nor any spokespeople for Syco had any comment to make.