As has become customary in recent years, studio versions of all the tracks sung on the live shows have been released for download via iTunes.
And it allows us all to see exactly how popular the acts are with those who could actually buy their music.
Last night saw the Groups and Boys perform and all eight of the performances have been released onto iTunes to download, as well as Apple Music to stream.
Rak-Su's new original song Dimelo is currently the highest ranked of them all, at Number 3 in the overall iTunes chart at the time of writing.
It's one place ahead of the group's song from last weekend, Mamacita, which has retuned to the Top 10 following the latest live show.
It's not too surprising given that we know Rak-Su topped the public vote yesterday for the second weekend in a row after the result was revealed as part of a new twist to the show.
Elsewhere in the charts, Lloyd Macey's cover of Hero is the only other song from last night to currently make the iTunes Top 100.
Meanwhile, Grace Davies' original song Too Young from last week remains in the Top 40, currently at Number 34, ahead of her second live performance tonight.
This evening's show will see the Overs and Girls' latest live performances.
Their songs will also be released to download and stream straight after the show finishes.
The X Factor is back Sunday night at 7:05PM on ITV with the latest live performances and fourth elimination of the series.