Wait for You - new version. It's simple maths.

Some of the leaks of the new Sweet7 have been blocked on YouTube but this version of Wait for You is still up.

You can compare it with the original which we posted back in November.

The difference is stark and clearer than on any of the other tracks. This is a vocally challenging song.

In the original that's not obvious. Led by Keisha, the band effortlessly and beautifully achieve the pitch and harmonics. In the new version it is obvious they're struggling.

This is good news! It's good news because it's simple maths and it highlights what Keisha and the other individual members have contributed to the group over the years. Let's list what this lays to rest.

Sweet 7 - the original!

Here is one of the "leaked" tracks from the original Sweet 7. It turns out a demo had been circulated, maybe to some radio stations, before the album was pulled to record Jade Ewen's vocals.

What to make of it?

Already, even with Keisha singing - and doesn't she put some life into this song! - it's like a ghost, a shadow of the Sugababes. The album is heavily influenced by US urban hip-hop. That's quite a long way from the dance music that created Freak Like Me and Round Round, let along Overload. The good news is the songs are half-way decent - Keisha shines on this one so it will be interesting to see what Jade makes of it. There are five tracks in circulation, including About A Girl.

The tracks to look for are: About A Girl, Miss Everything (with Sean Kingston), Wear My Kiss, Wait for You, Thank You for the Heartbreak