Should you spend your hard-earned wad on the new St. Trinian's soundtrack album, featuring contributions from Girls Aloud, Sugababes and Sophie Ellis-Bextor? The Sound has weighed up the disc's merits using cold, hard, emotionless science: each of the album's 13 tracks has been given a YAY! or a NAY! If the album gets more YAY!s than NAY!s; it's worth a tenner; if not, you're better off saving your cash for a rainy day.

Before we proceed, we'd like to warn the faint-hearted that the St Trinian's album does feature a comedy song by Rupert Everett.

1. Girls Aloud: 'Theme To St. Trinian's'
An electro-glam-sci-fi-rock romp featuring lyrics about "tormenting slags", "blackmailing Goths" and "doing as we damn well please". YAY!

2. Cast of St. Trinian's: 'Trouble'
Sensibly, a pretty faithful cover of Shampoo's snot-pop classic. YAY!

3. Marc Ronson feat Lily Allen: 'Oh My God'
The Ronson + Hip Popstrel Do Indie Cover single that isn't quite as popular as 'Valerie'. YAY!

4. Rupert Everett and Colin Firth: 'Love Is In The Air'
A cringe-inducing 'comedy' cover of John Paul Young's disco classic set to the rhythm track from Donna Summer's 'Bad Girls'. NAY!

5. Noisettes: 'Don't Give Up'
A riff-driven punk-pop tune featuring yelping, soulful vocals from a lady called Shingai. YAY!

6. The Ordinary Boys Vs. Lady Sovereign: 'Nine2Five'
A watery slice of ska-pop that tells listeners - be they cleaners, company directors or cabbage-pickers - how difficult and time-consuming it is to be a popstar. NAY!

7. Sophie Ellis-Bextor: 'If I Can't Dance'
Taut, catchy disco-pop with a chorus based on a famous quotation from a dead feminist. YAY!

8. Remi Nicole: 'Teenage Kicks'
A surprisingly rawk cover of that Undertones song John Peel used to be reasonably fond of. Sadly, it's not as enjoyable as the Busted version. NAY!

9. Gabriella Cilmi: 'Sanctuary'
A dreamy mid-tempo pop ballad sung by a woman who sounds a bit like Macy Gray, a bit like Amy Winehouse and a bit like Shaznay from All Saints. YAY!

10. The Four Aces feat Al Alberts: 'Love Is A Many Splendored Thing'
A gooey, melodic fifties pop song that sticks out like a hod-carrier at a WI meeting next to the spikier offerings on the rest of the album. NAY!

11. Sugababes: '3 Spoons of Suga'
The Nancy Sinatra-style pop strut from the Sugababes' superb Change album. YAY!

12. Girls Aloud: 'On My Way To Satisfaction'
A fuzz-rockin' cousin to the Aloud's 2006 single 'Wake Me Up', featuring lead vocals by Sarah Harding. YAY!

13. Cast of St. Trinian's: 'Theme To St Trinian's'
The Girls Aloud song from earlier, sung by actors and featuring a jaunty ska beat, casio-circa-1982 keyboards and a glam interlude. NAY!

The result: 8 YAY!s 5 NAY!s. It's Zavvi's lucky day.

What do you think of the St. Trinian's album? Hit the 'Click here to see and add comments' button to let us know.